Hubbry Logo
Johann Philipp ReisJohann Philipp ReisMain
Open search
Johann Philipp Reis
Community hub
Johann Philipp Reis
logo
8 pages, 0 posts
0 subscribers
Be the first to start a discussion here.
Be the first to start a discussion here.
Johann Philipp Reis
Johann Philipp Reis
from Wikipedia
Johann Philipp Reis

Johann Philipp Reis (German: [ʁaɪs]; 7 January 1834 – 14 January 1874) was a self-taught German scientist and inventor. In 1861, he constructed the first make-and-break telephone, today called the Reis telephone. It was the first device to transmit a voice via electronic signals, and is regarded by some as the first telephone.[1][2] Reis also coined the term telephone.[3]

Early life and education

[edit]
Reis' home in Friedrichsdorf, now a museum

Reis was born in Gelnhausen, Germany, the son of Marie Katharine (Glöckner) and Karl Sigismund Reis, a great baker.[4][5] His father belonged to the Evangelical Lutheran church.[6] Reis's mother died while he was an infant, and he was raised by his paternal grandmother, a well-read, intelligent woman. At the age of six Reis was sent to the common school of his hometown of Gelnhausen. Here his talents attracted the notice of his instructors, who advised his father to extend his education at a higher college. His father died before Reis was ten years old. His grandmother and guardians placed him at Garnier's Institute, in Friedrichsdorf, where he showed a taste for languages, and acquired both French and English, as well as a stock of miscellaneous information from the library.[7]

At the end of his fourteenth year, Reis was accepted to a Hassel Institute, at Frankfurt am Main, where he learned Latin and Italian. A love of science became apparent, and his guardians were recommended to send him to the Polytechnic School of Karlsruhe. His uncle wished him to become a merchant, and on 1 March 1850, Reis was apprenticed as a paints dealer in the establishment of J. F. Beyerbach, of Frankfurt, against his will. He told his uncle that he would learn the business chosen for him, but would continue his preferred studies as he could.[7]

By diligent service he won the esteem of Beyerbach, and devoted his leisure to self-improvement, taking private lessons in mathematics and physics and attending the lectures of Professor R. Bottger on mechanics at the Trade School. When his apprenticeship ended, Reis attended the Institute of Dr. Poppe, in Frankfurt. As neither history nor geography was taught there, several of the students agreed to instruct each other in these subjects. Reis undertook geography, and believed he had found his true vocation in the art of teaching. He also became a member of the Physical Society of Frankfurt.[7]

In 1855, he completed his year of military service at Kassel, then returned to Frankfurt to qualify as a teacher of mathematics and science by means of private study and public lectures. His intention was to finish his training at the University of Heidelberg, but in the spring of 1858 he visited his old friend and master, Hofrath Garnier, who offered him a post in Garnier's Institute.[7]

On 14 September 1859, Reis married, and shortly after he moved to Friedrichsdorf, to begin his new career as a teacher.

The telephone

[edit]
Reis' telephone

Reis imagined electricity could be propagated through space, as light can, without the aid of a material conductor, and he performed some experiments on the subject. The results were described in a paper, "On the Radiation of Electricity", which, in 1859, he mailed to Professor Poggendorff for insertion in the then well-known periodical, Annalen der Physik. The manuscript was rejected, to the great disappointment of the sensitive young teacher.[7]

Reis, as Bell would later do, had studied the organs of the ear and the idea of an apparatus for transmitting sound by means of electricity had floated on his mind for years. Inspired by his physics lessons he attacked the problem, and was rewarded with success. In 1860, he constructed the first prototype of a telephone, which could cover a distance of 100 meters. In 1862, he again tried to interest Poggendorff with an account of his "telephone", as he called it.[8] His second offering was also rejected, like the first. The learned professor, it seems, regarded the transmission of speech by electricity as a chimera; Reis bitterly attributed the failure to his being "only a poor schoolmaster."[7]

Reis had difficulty interesting people in Germany in his invention despite demonstrating it to (among others) Wilhelm von Legat, Inspector of the Royal Prussian Telegraph Corps in 1862.[9] It aroused more interest in the United States In 1872 when Professor Vanderwyde demonstrated it in New York.

Prior to 1947, the Reis device was tested by the British company Standard Telephones and Cables (STC). The results also confirmed it could faintly transmit and receive speech. At the time STC was bidding for a contract with Alexander Graham Bell's American Telephone and Telegraph Company, and the results were covered up by STC's chairman Sir Frank Gill to maintain Bell's reputation.[8]

Previous experimenters

[edit]
Reis monument in Gelnhausen: In 1878 European scientists declared Reis to be the telephone's inventor.

Since the invention of the telephone, attention has been called to the fact that, in 1854, M. Charles Bourseul, a French telegraphist, had conceived a plan for conveying sounds and even speech through electricity:

Suppose that a man speaks near a movable disc sufficiently flexible to lose none of the vibrations of the voice; that this disc alternately makes and breaks the currents from a battery: you may have at a distance another disc which will simultaneously execute the same vibrations. …It is certain that, in a more or less distant future, speech will be transmitted by electricity. I have made experiments in this direction; they are delicate and demand time and patience, but the approximations obtained promise a favourable result.[citation needed]

Bourseul deserves the credit of being perhaps the first to devise an electric telephone and try to make it; but Reis deserves the honor of first realising the idea as a device to transmit and receive sounds electrically.

Bourseul's idea seems to have attracted little notice at the time, and was soon forgotten. Even the Count du Moncel, who was ever ready to welcome a promising invention, evidently regarded it as a fantastic notion. It is very doubtful Reis had ever heard of it. Reis was led to conceive a similar apparatus by a study of the mechanism of the human ear, which he knew contained a membrane which vibrated due to sound waves, and communicated its vibrations through the hammer-bone behind it to the auditory nerve. It therefore occurred to him, if he made a diaphragm to imitate this membrane and caused it, by vibrating, to make and break the circuit of an electric current, he would be able through the magnetic power of the interrupted current to reproduce the original sounds at a distance.

During 1837-38 Professor Page of Massachusetts had discovered that a needle or thin bar of iron, placed in the hollow of a coil or bobbin of insulated wire, would emit an audible 'tick' at each interruption of a current, flowing in the coil, and if these separate ticks followed each other fast enough, by a rapid interruption of the current, they would run together into a continuous hum, to which he gave the name galvanic music. He also found that the pitch of this note corresponded to the rate of the current's interruption. These faint sounds were due to magnetostriction. From these and other discoveries by Noad, Wertheim, Marrian, and others, Reis knew that if the current which had been interrupted by his vibrating diaphragm were conveyed to a distance by wires and then passed through a coil like that of Page's, the iron needle would emit notes like those which had caused the oscillation of the transmitting diaphragm. Acting on this knowledge, he constructed his rudimentary telephone. Reis' prototype is now in the museum of the Reichs Post-Amt, Berlin.

Shortcomings

[edit]

Another of his early transmitters was a rough model of the human ear, carved in oak, and provided with a drum which actuated a bent and pivoted lever of platinum, making it open and close a springy contact of platinum foil in the metallic circuit of the current. He devised some ten or twelve different forms, each an improvement on its predecessors, which transmitted music fairly well, and even a word or two of speech with more or less fidelity.

The discovery of the microphone by Professor Hughes has demonstrated the reason for this failure. Reis' transmitter was based on interrupting the current, and the spring was intended to close the contact after it had been opened by the shock of a vibration. So long as the sound was a musical tone it proved efficient, for a musical tone is a regular succession of vibrations. The vibrations of speech are irregular and complicated, and in order to transmit them the current has to be varied in strength without being altogether broken. The waves excited in the air by the voice should merely produce corresponding waves in the current. In short, the current ought to undulate in sympathy with the oscillations of the air. The Reis phone was poor at transmitting articulated speech, but was able to convey the pitch of the sound.

It appears from the report of Herr von Legat, an inspector with the Royal Prussian Telegraphs, which was published in 1862, that Reis was quite aware of this principle, but his instrument was not well adapted to apply it. No doubt the platinum contacts he employed in the transmitter behaved to some extent as a crude metal microphone, and hence a few words, especially familiar or expected ones, could be transmitted and distinguished at the other end of the line. If Reis' phone was adjusted so the contact points made a "loose metallic contact", they would function much like the later telephone invented by Berliner or the Hughes microphone, one form of which had iron nails in loose contact. Thus the Reis phone worked best for speech when it was slightly out of adjustment.

A history of the telephone from 1910 records that, "In the course of the Dolbear lawsuit, a Reis machine was brought into court, and created much amusement. It was able to squeak, but not to speak. Experts and professors wrestled with it in vain. It refused to transmit one intelligible sentence. ‘It can speak, but it won't,’ explained one of Dolbear's lawyers." It is now generally known that while a Reis machine, when clogged and out of order, would transmit a word or two in an imperfect way, it was built on the wrong lines. It was no more a telephone than a wagon is a sleigh, even though it is possible to chain the wheels and make them slide for a foot or two. Said Judge Lowell, in rendering his famous decision:

A century of Reis would never have produced a speaking telephone by mere improvement of construction. It was left for Bell to discover that the failure was due not to workmanship but to the principle which was adopted as the basis of what had to be done. …Bell discovered a new art—that of transmitting speech by electricity, and his claim is not as broad as his invention. …To follow Reis is to fail; but to follow Bell is to succeed.[10]

Reis does not seem to have realised the importance of not entirely breaking the circuit of the current; at all events, his metal spring was not practical for this, for it allowed the metal contacts to jolt too far apart, and thus interrupt the electric current.

His experiments were made in a little workshop behind his home at Friedrichsdorf; and wires were run from it to an upper chamber. Another line was erected between the physical cabinet at Garnier's Institute across the playground to one of the classrooms, and there was a tradition in the school that the boys were afraid of creating an uproar in the room for fear that Philipp Reis would hear them with his "telephon".

Publication

[edit]

Reis' new invention was articulated in a lecture before the Physical Society of Frankfurt on 26 October 1861, and a description, written by himself for Jahresbericht a month or two later. It created a good deal of scientific excitement in Germany; models of it were sent abroad, to London, Dublin, Tiflis, and other places. It became a subject for popular lectures, and an article for scientific cabinets.

Reis obtained brief renown, but rejection soon set in. The Physical Society of Frankfurt turned its back on the apparatus which had given it lustre. Reis resigned in 1867, but the Free German Institute of Frankfurt, which elected him as an honorary member, also slighted the instrument as a mere "philosophical toy".

Reis believed in his invention, even if no one else did; and had he been encouraged by his peers from the beginning he might have perfected it. He was already stricken with tuberculosis, however. After Reis gave a lecture on the telephone at Gießen in 1854, Poggendorff, who was present, invited him to send a description of his instrument to the Annalen. Reis, it is said, replied: "Ich danke Ihnen sehr, Herr Professor, aber es ist zu spät. Jetzt will ich ihn nicht schicken. Mein Apparat wird ohne Beschreibung in den Annalen bekannt werden" ("Thank you very much, Professor, but it is too late. Now I do not want to send it. My apparatus will become known without any description in the Annalen.")

Final days

[edit]
Grave of Reis at Friedrichsdorf — from Philipp Reis: Inventor of the Telephone by Silvanus Thompson (1883) [11]

Later, Reis continued his teaching and scientific studies, but his failing health had become a serious impediment. For several years it was only by the exercise of his strong will that he was able to carry on with his duties. His voice began to fail as his lung disease became more pronounced, and in the summer of 1873, he was obliged to forsake his tutoring duties for several weeks. An autumn vacation strengthened his hopes of recovery and he resumed his teaching, but it was to be the last flicker of his expiring flame. It was announced that he would show his new gravity-machine at a meeting of the Gesellschaft Deutscher Naturforscher und Ärzte (Society of German Scientists and Physicians) of Wiesbaden in September, but he was too ill to appear. In December he lay down and, after a long and painful illness, died at five o'clock in the afternoon of 14 January 1874.

In his Curriculum Vitae he wrote:

As I look back upon my life I call indeed say with the Holy Scriptures that it has been "labour and sorrow." But I have also to thank the Lord that He has given me His blessing in my calling and in my family, and has bestowed more good upon me than I have known how to ask of Him. The Lord has helped hitherto; He will help yet further.

Philipp Reis was buried in the cemetery of Friedrichsdorf, and in 1878, after the introduction of the electric telephone, the members of the Physical Society of Frankfurt erected an obelisk of red sandstone bearing a medallion portrait over his grave.[11]

Recognition and technological assessment

[edit]

In 1878, four years after his death and two years after Bell received his first telephone patent, European scientists dedicated a monument to Philip Reis as the inventor of the telephone.

Documents of 1947 in London's Science Museum later showed that after their technical adjustments, engineers from the British firm Standard Telephones and Cables (STC) found Reis' telephone dating from 1863 could transmit and "reproduce speech of good quality, but of low efficiency".

Sir Frank Gill, then chairman of STC, ordered the tests to be kept secret, as STC was then negotiating with AT&T, which had evolved from the Bell Telephone Company, created by Alexander Graham Bell. Professor Bell was generally accepted as having invented the telephone and Gill thought that evidence to the contrary might disrupt the ongoing negotiations.

Johann-Philipp-Reis Preis (Award)

[edit]

The VDE (the German electrical engineering association), Deutsche Telekom and the cities of Friedrichsdorf and Gelnhausen biannually present the Johann-Philipp-Reis Preis (prize) to scientists for "....distinguished scientific achievements in the area of communication technology".

Telephone invention controversies

[edit]

Besides Reis and Bell, many others claimed to have invented the telephone. The result was the Gray-Bell telephone controversy, one of the United States' longest-running patent interference cases, involving Bell, Thomas Alva Edison, Elisha Gray, Emil Berliner, Amos Dolbear, J. W. McDonagh, G. B. Richmond, W. L. Voeker, J. H. Irwin, and Francis Blake Jr. The case started in 1878 and was not finalised until 27 February 1901. Bell and the Bell Telephone Company triumphed in this crucial decision, as well as every one of the over 600 other court decisions related to the invention of the telephone. The Bell Telephone Company never lost a case that had proceeded to a final trial stage.[12]

Another controversy arose over a century later when the U.S. Congress passed a resolution in 2002 recognizing Italian-American Antonio Meucci's contributions in the invention of the telephone (not for the invention of the telephone), a declaration that bore no legal or other standing at the United States Patent and Trademark Office (USPTO). Canada's Parliament quickly followed with a tit-for-tat declaration, which clarified: "....that Alexander Graham Bell of Brantford, Ont., and Baddeck, N.S., [was] the inventor of the telephone."[13] Prior to his death, Meucci had lost his only concluded Federal lawsuit trial related to the telephone's invention.

See also

[edit]

References

[edit]

Further reading

[edit]
[edit]
Revisions and contributorsEdit on WikipediaRead on Wikipedia
from Grokipedia
Johann Philipp Reis (January 7, 1834 – January 14, 1874) was a German inventor, , and schoolteacher renowned for developing the first working model of an electric in 1860, which he publicly demonstrated in 1861. Born in , in the Principality of Isenburg (now , ), Reis displayed an early aptitude for natural s and received a broad education at local schools, including Garnier’s in and Hassel’s in , where he studied languages, mathematics, and sciences. By age 16, he apprenticed in a color manufacturing firm but soon transitioned to teaching, becoming a science master at Garnier’s in in 1858, where he conducted experiments in a personal laboratory and joined the Physical Society of in 1859. Reis's telephone invention stemmed from his studies of the human ; his device used a vibrating (tympanum) connected to a contact to convert waves into intermittent electrical signals, transmitted via a galvanic circuit to a receiver with an and sounding box that reproduced the sounds. He first demonstrated it on October 26, 1861, to the Physical Society of , successfully transmitting , , and simple words over distances up to 300 feet, though speech reproduction was imperfect due to the make-and-break contact mechanism. Over the following years, Reis refined three models (1858–1863), lectured on his "telephon" at institutions like the Free German Institute in 1862, and strung the world's first lines across his campus, connecting classrooms. His work was published in 1861 as Ueber Telephonie durch galvanischen Strom and demonstrated internationally, but it received limited contemporary recognition and no commercial success, as Reis shared his designs freely without patenting them. On a personal level, Reis married Margaretha Schmidt in 1859, with whom he had children, and his brother-in-law assisted in experiments; however, his health declined from pulmonary consumption (), leading to his death at age 40 in . Posthumously, Reis gained acclaim as a pioneer of , influencing later inventors like , who examined a Reis device in 1875; a monument was erected in his honor in in 1878, and his instruments are preserved in institutions such as Berlin's Reichspostmuseum. Today, he is credited with the first practical transmission of speech by electricity, marking a foundational step in .

Biography

Early Life

Johann Philipp Reis was born on January 7, 1834, in , in the principality of Cassel (), , into a family of modest means; his father, Johann Jacob Reis, worked as a master baker and farmer affiliated with the Evangelical Church. His mother, Margaretha Elisabeth, passed away in infancy, and his father died in 1838, orphaning Reis at age 4. He was raised primarily by his paternal grandmother, who played a key role in shaping his disposition and religious sentiments while fostering an environment that encouraged intellectual growth. This period of early family loss instilled resilience, as Reis navigated childhood without both parents, living initially with his grandmother before entering educational institutions. Reis's early years were marked by personal challenges, including the onset of in his youth, which profoundly shaped his worldview and interests. Despite this hardship, he developed a keen interest in and through self-directed study and experimentation, often drawing on limited resources available in his modest surroundings. His father's earlier efforts to cultivate his mental faculties laid a foundation for this curiosity, which manifested in youthful pursuits of natural and practical inventions, even as his isolated him from typical social interactions. Reis began his initial education at a local in starting at age 6, where the curriculum emphasized practical skills suited to his family's background. This early schooling, combined with self-study under his grandmother's guidance, honed his aptitude for languages, , and the sciences, setting the stage for more formal training later in childhood. After his parents' deaths, at age about 7 he was placed in Garnier's in , where his intelligence was recognized, allowing him access to environments that supported his growing fascination with scientific principles. After completing his education, he apprenticed at a color manufacturing firm in starting in 1850.

Education and Teaching Career

Reis received his secondary education at Garnier’s Institute in Friedrichsdorf, where he studied languages such as English and French, laying a foundation for his later scholarly pursuits. He subsequently attended the Hassel Institute in Frankfurt, focusing on Latin and Italian while cultivating an early interest in natural sciences and mathematics. Despite his from youth, which motivated his deep engagement with sound-related studies, Reis became largely self-taught in physics, , and acoustics through private lessons and independent experiments that supplemented his formal training. These efforts equipped him with the technical knowledge essential for his scientific endeavors. Reis commenced his teaching career in 1858 as a tutor in natural sciences and at ’s Institute in , where he was later appointed a master. In subsequent years, he held positions teaching science at the institute, adapting pedagogical methods to his own hearing impairment for effective instruction. Throughout the 1850s, Reis published early works on and sound in educational and scientific journals, including a 1859 submission to Poggendorff’s titled "On the Radiation of ," which was rejected but explored electrical transmission principles.

The Reis Telephone

Historical Context and Influences

In the mid-19th century, advancements in and electromagnetism laid foundational groundwork for electrical communication technologies across and . Samuel Morse's development of the electric telegraph in the 1830s and 1840s enabled rapid transmission of coded messages over wires, revolutionizing long-distance signaling by replacing slower optical systems like . Complementing this, Michael Faraday's 1831 discovery of provided the theoretical basis for generating and manipulating electrical currents, influencing subsequent innovations in . These breakthroughs fostered a burgeoning field of , where was increasingly harnessed for practical applications beyond mere signaling. Early experiments in sound transmission emerged amid this electrical fervor, conceptualizing the extension of voice over wires. In 1854, French telegraph engineer Charles Bourseul published an article in L'Illustration outlining a theoretical device that would use a vibrating diaphragm to modulate electrical current, allowing speech to travel along wires akin to Morse's code but for continuous sound. Similarly, Italian inventor constructed rudimentary prototypes in the early 1850s, including a voice-communicating device called the teletrofono, which he demonstrated privately to connect rooms in his New York residence, though financial constraints limited its public dissemination. These efforts highlighted growing curiosity about acoustic-electrical transduction, predating practical implementations but inspiring further inquiry into replication. The acoustic theories of profoundly shaped this era's understanding of , particularly through his analysis of vibrating membranes and wave propagation. In his 1863 work On the Sensations of Tone, Helmholtz demonstrated that complex decompose into simpler sinusoidal components, using mechanical models of membranes tuned to specific frequencies to isolate and study auditory vibrations. His physiological acoustics bridged physics and perception, emphasizing how membranes in the ear respond to , which informed experimental designs for artificial sound reproduction. Johann Philipp Reis engaged with these ideas through 's vibrant scientific circles, where collaborative experimentation thrived. As a teacher of physics and natural sciences in from 1858 onward, Reis joined the Physikalische Verein (Physical Society), a local association founded in 1824 that promoted hands-on research in and acoustics among educators and amateurs. This environment, emphasizing empirical demonstrations and journal publications, exposed him to contemporary debates on and , encouraging his own investigations without formal higher education. Amid Europe's industrialization, economic and social pressures amplified interest in long-distance communication to support expanding , railways, and urban networks. The 19th-century shift from agrarian to factory-based economies demanded faster coordination across distances, as steam-powered transport and growing populations strained traditional systems. In and Britain, burgeoning industries spurred investments in infrastructure, viewing electrical as a tool for and imperial administration, though voice transmission remained an aspirational frontier. This context positioned experimentalists like Reis within a broader push for technologies that could compress time and space in an increasingly interconnected .

Development and Design

Johann Philipp Reis began his experiments on electrical sound transmission in 1858, initially focusing on simple converters that transformed acoustic vibrations into electrical signals using animal membranes stretched over a frame to mimic the human . These early devices aimed to replicate the mechanical aspects of hearing, drawing from Reis's studies of auditory during his teaching career. By , Reis had evolved his design into the first functional make-and-break , featuring a vibrating diaphragm made from animal that interrupted an electrical circuit via contacts as it moved with waves. The transmitter consisted of this diaphragm assembly connected to a galvanic battery, while the receiver employed a similar with a needle or to amplify received vibrations into audible . This prototype successfully transmitted musical tones over distances of up to 100 meters of wire, marking a significant advancement in converting and conveying electrically. Reis constructed three main prototypes between 1858 and 1863, each refining the make-and-break mechanism to better capture and relay sound variations, with the version serving as the foundational working model that informed later iterations. In his paper detailing the invention, Reis coined the term "," derived from the Greek words tele (far) and phone (sound), to describe a device for distant speech transmission. Reis's interest in electrical sound transmission arose from his studies of acoustics and the human ear during his teaching career at Garnier’s Institute, combined with influences from contemporary scientific literature. This drive, along with his self-taught expertise in physics, guided the process.

Demonstrations and Initial Reception

Reis first publicly demonstrated his prototype on October 26, 1861, before the Physical Society of am Main, where it successfully transmitted musical notes ranging from F to c''', melodies, simple words, and even short songs over a of approximately 300 feet using galvanic current. The device reproduced these sounds with varying clarity, allowing listeners to recognize the transmitted voice in some cases, though spoken words were often indistinct without musical accompaniment. In the following years, Reis conducted additional demonstrations to scientific audiences across and beyond, including shows in 1862 at the Free German Institute in , where musical notes and songs were transmitted despite challenges with wire conductivity, and in 1863 to high-profile figures such as the and the King of . Further presentations occurred in and other cities to various scientific groups, featuring live performances of songs like "The Young Recruit" and "The Moon Has Risen," as well as basic speech, which elicited interest for their novelty in electrical sound transmission. These events highlighted the device's capability to convey tonal qualities effectively, though reproducibility depended on setup quality. Reis documented his findings in a 1863 in the Annals of the Physical Society (Jahresbericht des Physikalischen Vereins), detailing the apparatus setup, experimental results, and observed transmissions of and voice. The initial reception was mixed: while praised by scientists such as Professors Quincke, Bohn, and Böttger for its innovative approach to electrical , and positively covered in periodicals like Die Gartenlaube, it faced dismissal from others, including a rejection of Reis's submission by Poggendorff's , which deemed it an impractical curiosity rather than a viable . Commercialization efforts were limited during Reis's lifetime; he commissioned production of improved models (priced at 14–21 florins each) through Frankfurt mechanic J. Wilh. Albert & Sohn, resulting in sales of a few units to schools and scientific collections, such as Clongowes Wood College in Ireland, but no widespread adoption occurred due to perceived limitations and lack of practical utility.

Technical Features and Limitations

The Reis telephone operated on a make-and-break contact mechanism, in which vibrations from a sound source caused a diaphragm to intermittently interrupt an electrical current, producing pulses that approximated the of the original . This design mimicked the human ear by converting acoustic vibrations into variable electrical signals via a loose contact, rather than a strict on-off interruption, allowing for some modulation of current strength proportional to the voice's intensity. In the transmitter, a —typically made from intestine, skin, or hog's bladder—served as the diaphragm, stretched over a conical tube or box-like structure and connected to a or strip with contacts. A or similar metal point maintained the , which the membrane's vibrations adjusted to vary the circuit's resistance. The receiver employed a similar setup, often featuring a inserted into an coil mounted on a , such as a box or body, where incoming current pulses caused the needle to vibrate and produce audible tones through magnetic expansion and contraction. The device demonstrated capabilities in transmitting music and musical tones effectively, including piano notes from F to c''' and melodies like "God Save the Queen," as well as indistinct speech elements such as vowels and some consonants, over distances up to 100 meters. For instance, it could reproduce phrases like "Guten Morgen" when spoken clearly, though articulation remained muffled and required careful adjustment of membrane tension and contact pressure. The range was limited to about 100–200 meters in optimal conditions, constrained by the era's battery and wire . Key limitations arose from the intermittent current, which inadequately captured the continuous undulations needed for clear or full speech articulation, resulting in weak, muffled sounds that lost finer nuances and . The system was prone to wear on the contacts, inconsistent performance due to sensitivity in adjustments, and inefficiency in reproducing complex sounds without shouting, which risked abrupt circuit breaks. Posthumous tests in 1947 by confirmed the device's ability to transmit faint speech but highlighted its inefficiency compared to later continuous-current designs, requiring amplification for audibility and underscoring the mechanical unreliability of the make-and-break principle.

Later Life and Legacy

Illness and Death

In the late , Johann Philipp Reis began suffering from , a condition likely exacerbated by his demanding role as and the financial that forced him to despite his deteriorating . His illness progressed severely by 1872, when he experienced pulmonary consumption leading to significant voice impairment, and by 1873, a hemorrhage left him nearly voiceless and unable to continue regular duties. He persisted with limited experiments on his inventions amid his declining strength while living in , where he had taught since 1859. His final years were overshadowed by ongoing financial hardships as a modestly paid , though he received support from friends, colleagues such as Professor Böttger, and students at Garnier's Institute, who aided in practical matters and even purchased some of his demonstration instruments in 1873. Reis, married to Margaretha Schmidt since 1859 with whom he had two children, was cared for by his wife and family during his last months. He died on January 14, 1874, at the age of 40, after a prolonged and painful battle with , and was buried in the cemetery.

Posthumous Recognition

Following Reis's death in 1874, the Physical Society of , recognizing his pioneering work on the , raised funds to erect a monument over his grave in the cemetery. This of red sandstone, featuring a medallion portrait of Reis, was inaugurated on December 8, 1878, and inscribed him explicitly as the inventor of the . This initiative reflected broader European scientific validation of Reis's contributions in the late 1870s, as physicists across the continent acknowledged his device as the first to achieve voice transmission over wire, predating later commercial developments. In 1878, the Frankfurt society's actions symbolized a collective endorsement by European scholars, who viewed Reis's invention as the foundational step in , despite its technical limitations in clarity and range. From the 1880s onward, Reis's achievements gained prominence in historical and , crediting him with early successful voice transmission. Silvanus P. Thompson's 1883 biography, Philipp Reis: Inventor of the Telephone, provided a detailed account with translations of Reis's original papers and contemporary reports, establishing his legacy in English-speaking scholarly circles. Similarly, the Imperial German Post-Office's 1880 publication Die Geschichte und Entwickelung des elektrischen Fernsprechwesens integrated Reis's work into the official narrative of electrical communication history. Additional memorials honored Reis in his birthplace. A bust monument was unveiled in Gelnhausen's Untermarkt in August 1885, commemorating his birth there in 1834 and his . Plaques at key sites, including the former Garnier's Institute in where he taught and experimented, further marked locations of his innovations.

Invention Disputes

Key Claims Against Bell

The disputes over the telephone's invention intensified following Alexander Graham Bell's receipt of U.S. No. 174,465 on , 1876, which described a method for transmitting speech using undulations in a continuous . This patent immediately faced challenges in multiple lawsuits, including those brought by and the U.S. government, where opponents argued that Bell had drawn upon prior work, including Johann Philipp Reis's designs from the 1860s. Claims emerged that Bell accessed Reis's apparatus through German scientific contacts, as Bell had studied under influences like and was aware of European developments; additionally, Bell personally examined a preserved at the in March 1875, shortly before finalizing his own invention. In the 1880s, amid escalating litigation such as the Telephone Cases (1887–1888), witnesses provided sworn testimonies asserting that Reis's original device from 1861 had successfully transmitted intelligible speech during demonstrations. For instance, witnesses including Reis's brother-in-law Philipp Schmidt and music teacher Heinrich Friedrich Peter testified that they heard clear words and sentences, such as "Das Pferd frisst keinen Gurkensalat" ("The horse does not eat cucumber salad"), spoken through the instrument over distances. These accounts, compiled in contemporary publications, countered arguments that Reis's was limited to musical tones and emphasized its capability for articulate speech predating Bell by over a decade. The legal battles further highlighted Reis's priority, with examinations of his work in U.S. courts during the and , including depositions that credited his 1861 device as a functional precursor despite its imperfections. Although these claims were ultimately dismissed in favor of Bell's in the Supreme Court's 1888 ruling, they sustained public and scientific debate by demonstrating that Reis's intermittent make-and-break contact mechanism had achieved voice transmission years earlier. Patent comparisons underscored this: Reis's design relied on a vibrating diaphragm to intermittently an electric circuit, producing audible sounds, whereas Bell's innovation involved modulating a continuous current without breaks, but courts acknowledged Reis's apparatus as anticipatory from 1861—15 years before Bell's filing. Reis's claims were often aligned with those of other inventors in broader anti-Bell narratives during these disputes, particularly alongside Italian inventor , whose 1871 caveat for a voice communicator was invoked in the same lawsuits to challenge Bell's monopoly. In cases like v. American Bell Telephone Co. (1888), prosecutors grouped Reis and Meucci as evidence of overlooked foreign precedents, arguing that Bell's overlooked these contributions and sought to invalidate it on grounds of incomplete novelty. Despite the rulings upholding Bell, these combined efforts amplified Reis's role in the invention's contested history.

Modern Evaluations and Awards

In 1947, engineers at (STC) in Britain conducted tests on a preserved transmitter from 1863, confirming that it could transmit intelligible speech. However, the results were not publicly released at the time, as STC Chairman Sir Frank Gill reportedly ordered their suppression to avoid jeopardizing a major contract with the American Telephone and Telegraph Company (), which held Alexander Graham Bell's patents. These findings, declassified decades later, bolstered arguments for Reis's role in early voice transmission but highlighted institutional biases in historical narratives. The U.S. passed H. Res. 269 in 2002, honoring Italian inventor for his pre-Bell work on the and recognizing that Bell's 1876 did not constitute the first of a voice communication device. This acknowledged the collaborative and contested nature of telephony's development, drawing on historical evidence of devices like Reis's that demonstrated electrical speech transmission in the 1860s. Contemporary scholarship views Reis as a foundational pioneer in voice telephony for successfully converting into electrical signals and back, achieving the first documented transmission of musical notes and limited speech in 1861, though his make-and-break contact mechanism proved unreliable for practical, continuous conversation. Historians and engineers, such as those at the , credit him with proving the acoustic-electric principle but note that his device lacked the liquid transmitter innovation needed for commercial viability, distinguishing it from Bell's later refinements. This assessment positions Reis as an influential experimenter whose work inspired subsequent inventors, rather than the developer of a deployable system. The Johann Philipp Reis Prize, established in 1986 and awarded biennially by the German Association for Electrical, Electronic & Information Technologies (VDE), honors young under 40 for groundbreaking innovations in , reflecting Reis's enduring legacy in communication technology. Notable recipients include coding theorist Antonia Wachter-Zeh in 2023 for advances in and error-correcting codes, and fiber optics researcher Georg Rademacher in 2025 for high-speed data transmission enabling AI applications, underscoring the prize's focus on impactful . In 2011, marking the 150th anniversary of Reis's first public demonstration, Germany hosted commemorative events including exhibitions at the Frankfurt Physical Society and lectures on his contributions to acoustics, organized by institutions like the Hessian Museum of Technology. Additionally, digital archives of Reis's original papers, notebooks, and correspondence—translated and annotated in works like Silvanus P. Thompson's 1883 biographical sketch—have been made accessible through platforms such as and the , facilitating modern research into his experimental methods and influence on electrical .

References

  1. https://www.deutschlandmuseum.de/en/history/[calendar](/page/Calendar)/1834-01-07-birth-of-the-telephone-inventor/
Add your contribution
Related Hubs
User Avatar
No comments yet.