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19th Century hearing aid, illustration

Hearing aid, conceptual illustration

19th Century phonograph, illustration

Phonautograph, 19th century

Bullet-detecting invention, 1881

Carbon electric arc lamp, 1800s

Telemicrophonograph, early 20th century

Hughes' carbon microphone, 19th century

Early 19th Century headphones, illustration

19th C bath and electrical treatments, illustration

19th C singer using pneumograph, illustration

Acoustics experiment by Lippmann, 19th century

Marey's sphygmograph, 19th century illustration

Oscilloscope displaying sound wave signal, illustration

Electric cooking stove, 19th century

Gramme arc lamp regulator, 19th century

Early telephone technology, 1830s

19th Century music recording, illustration

Edison's phonograph, 19th century

Alessandro Volta's wet battery

Bell telephone, 19th century

Phonograph piano recordings, 19th century

Radio icon

Radio icon

Radio icon

Ear trumpet use, 19th century

Helmholtz Ophthalmoscope, artwork

Tesla oscillator, historical illustration

Loudspeaker soundwave, illustration

Electric polyscope use, 19th century

Carbon microphone, 19th century illustration

Early electric engine, 19th Century illustration

First stethoscope and lungs with tuberculosis, 19th century illustration

Folding urinal patent, 1884

Satirical cartoon, 1856

Satirical cartoon, 1859

Dishwashing machine, 19th century

McKay Shoe-sewing machine, illustration

Ader telephone station, 19th century

Exhibition of Bell's telephone, 1876

19th Century electricity demonstration

Hans Orsted experimenting, 1820 artwork

Electricity experiments, 1807

Hauksbee electrostatic generator, 1709

Holtz electrostatic generator, 1865

Lightning conductor umbrella, 1770s

Lightning rods, 19th century

Volta's 'Crown of Cups' battery, 1800

Electromagnetic needle effect, 1820

Wollaston battery pile, 1810s

Chromic acid battery, 19th century

Bunsen battery, 1840s

Camacho cascade battery, 1870s

Batteries connected in series

Plante accumulator battery, 1859

Heinz lead-acid battery, 19th century

Thomson galvanometer, 1850s

Deprez-d'Arsonval galvanometer, 1882

Ammeter and shunt, 19th century

Ammeter and recorder, 19th century

Voltmeter recorder, 19th century

Decade resistance box, 19th century

Ohmmeter, 19th century

Electricity meter, 19th century

Meritens magneto generator, 1870s

Gramme dynamo, 1870s

Gramme dynamo armature, 1870s

Gramme dynamo, 1870s

Siemens dynamo, 19th century

Multipolar dynamo, 1900s

Siemens dynamo, 1900s

Electrical generators, 1900s

Electric spark displays, 1850s

Geissler tube, 1850s

Tesla high-frequency condenser, 1890s

Electricity transformer, 1900s

Optical communications, 19th century

Nollet's electrostatic generator, 18th century

Holtz electrostatic induction generator, 19th century

Wimshurst electrostatic generator, 19th century

Designs of Leyden jars, 19th century

Foucault interrupter, 19th century

Lippmann electrometer, 19th century

Large storage battery, 19th century

Gramme dynamo, 19th century

Zipernowsky transformer, 19th century

Edison's incandescent light bulb, 19th century

Thomson galvanometer, 1850s

Pellat electrodynamometer, 19th century

Clamond electroplating thermopile, 1874

Thomson quadrant electrometer, 19th century

Gramme dynamo, 1870s

Lightning arrester, 1900s

Lightning arrester, 1900s

Lighthouse electric light, 19th century

Large storage battery, 19th century

Giovanni Caselli, Italian physicist

Heliograph, 19th century

Illustration of Volta's electrophorus

Edison's first phonograph, 1877

Vannevar Bush comparator patent, 1959

Vannevar Bush comparator patent, 1959

Goldberg statistical machine patent, 1931

Listening to music, conceptual illustration

Listening to music, conceptual illustration

Using earphones, illustration

Using earphones, illustration

Earphones, illustration

Earphones, illustration

Ruhmkorff coil, 19th century

Headphones icon

Headphone icon - Blue watercolor background

Headphone icon

Headphone icon - white circle button

Headphone icon

Headphone icon

Headphone icon

Headphone icon - white circle button

Notes on Davey safety lamp, 19th century

Notes on Davey safety lamp, 19th century

Notes on Davey safety lamp, 19th century

Bell and Gray using their telephones, 19th century

Early electric telegraph machine, 19th Century illustration

Early electric telegraph receiver, 19th Century illustration

Early telegraph printing receiver, 19th C illustration

Franklin designing lightning rods, 1750

Musschenbroek inventing the Leyden jar, 1746

Tinnitus, conceptual illustration

Tinnitus, conceptual illustration

Tinnitus, conceptual illustration

Headphone icon - Red Ribbon banner

Headphone icon - Red Ribbon banner

Central telephone exchange, 19th century

Telephone switchboard, 19th century

Telephone switchboard, 19th century

Megaphone communications, 19th century

Memory loss, conceptual illustration

Memory loss, conceptual illustration

Memory loss, conceptual illustration

Memory loss, conceptual illustration

Memory loss, conceptual illustration

Memory loss, conceptual illustration

Hand-held massage machine, early 20th century illustration

Single hearing aid icon Flat modern style vector illustration

Progress of the century, 19th century illustration

Piston pumps, 15th century

Water transport mechanisms, 15th century

Lifting mechanisms, 15th century

Mechanical devices, 19th century

Theatrum Machinarum Novum, frontispiece

Mechanical cogs, 17th century

Trevithick steam car, 19th century

Montgolfier hydraulic ram, 18th century

Bollee hydraulic ram, 19th century

Stethoscope Icon Isolated. Health Care Concept.. Stethoscope icon isolated on white. Health care concept. First medical aid. Diagnosis with stethoscope medicine equipment. Professional instrument for health diagnostic. Vector illustration

Stethoscope Icon Isolated. Health Care Concept.. Stethoscope icon isolated on white. Health care concept. First medical aid. Diagnosis with stethoscope medicine equipment. Professional instrument for health diagnostic. Vector illustration

Charles de Changy, French engineer

Hernia surgery instrument, 16th century

Hernia surgery instruments, 16th century

Hernia surgery instruments, 16th century

Cooke and Wheatstone telegraph

Cochlear implant, illustration

Simple machines, 19th century

Memory loss, conceptual illustration

Memory loss, conceptual illustration

Arsonval telephone station, 19th century

Oscilloscope displaying sound wave signal, illustration

19th Century radiography

Formaldehyde disinfection, 19th century

19th Century surgeon, illustration

Compressed air baths, illustration

Human auditory system, 19th Century illustration

Radio for information broadcasting vector. Isolated icon of device with antenna for info and entertaining purposes, music and sounds, notes waves. Radio and Playing Music, Notes and Waves Icon

Woman listening to music on retro radio vector. Isolated mass media equipment with antenna, user pressing button on device for broadcasting live news. Radio with Antenna, Woman Listening to Device

Magnetic induction demonstration, 19th century

Daniell cell, 19th century

Solenoid demonstration, 19th century

Ampere and Arago on electromagnetism, 1820

Electromagnetism demonstration, 19th century

Measuring electrostatic attraction, 19th century

Measuring electrostatic repulsion, 19th century

Joule's heat-equivalence experiment, 1840s

Hertz's electromagnetism experiments, 1880s

Electrical decomposition of water, 1800

vector illustration of a old radio

vector illustration of a old radio with floral and grunge

Jean-Antoine Nollet demonstration

Lightning conductor hats, 1778

Electromagnet crane, 19th century

Georges-Louis Le Sage, Swiss physicist

Moissan furnace, 19th century

Tesla's Wardenclyffe Tower laboratory, illustration

Pellat electrodynamometer, 1907

Meylan-d'Arsonval voltmeter, 1900s

Thermal voltmeter, 1900s

Standard ampere, 1900s

Tesla's planned power transmitters, illustration

Electrostatic generator sparks, 18th century

Electricity generator, 19th century

Luigi Galvani, Italian anatomist