Edison's acoustic transmitter.

Acoustic Transmitter

Edison's acoustic transmitter.

Edison's first Articulating Telephone.

Articulating Telephone

Edison's first Articulating Telephone.

"Edison's paper carbon lamp."—E. Benjamin Andrews 1895

Carbon Lamp

"Edison's paper carbon lamp."—E. Benjamin Andrews 1895

Edison's Carbon Telephone. He tried using carbon with the purpose of reducing the delicacy of the instrument.

Carbon Telephone

Edison's Carbon Telephone. He tried using carbon with the purpose of reducing the delicacy of the instrument.

"Edison cell, type RR. The electrolyte used is caustic soda, the positive element zinc, and the negative element copper oxide. The Edison cell is suitable for large stationary gas engine ignition, ralroad crossing signals, electroplating, fire alarms, telephone cicuits, etc." -Hawkins, 1917

Edison Cell

"Edison cell, type RR. The electrolyte used is caustic soda, the positive element zinc, and the negative…

Portrait of Thomas Edison

Thomas A Edison

Portrait of Thomas Edison

Edison talking into the phonograph.

Thomas Edison

Edison talking into the phonograph.

Edison talking into the phonograph.

Thomas Edison

Edison talking into the phonograph.

"...is constructed with a plate of black oxide of copper suspended between two plates of zinc, and the fluid is a solution of caustic potash in water." -Atkinson 1903

Edison-Lalande Cell

"...is constructed with a plate of black oxide of copper suspended between two plates of zinc, and the…

An Edison fuse plug and casing for switchboard use.

fuse plug and casing

An Edison fuse plug and casing for switchboard use.

"Edison fuse plugs and casings for switchboard use." —Croft 1920

Casing and Fuse Plugs

"Edison fuse plugs and casings for switchboard use." —Croft 1920

"Edison fuse plug cutout for switchboard use." —Croft 1920

Edison Fuse Plug Cut-Out

"Edison fuse plug cutout for switchboard use." —Croft 1920

An instrument developed by Edison used to measure humidity.

Hygrometer

An instrument developed by Edison used to measure humidity.

"Edison's first incandescent platinum lamp."—E. Benjamin Andrews 1895

Incandescent Lamp

"Edison's first incandescent platinum lamp."—E. Benjamin Andrews 1895

The first filament and bulb created by Thomas Edison.

Lightbulb

The first filament and bulb created by Thomas Edison.

An invention by Edison used to see if chemical vapors could change a strip of rubber.

Odorometer

An invention by Edison used to see if chemical vapors could change a strip of rubber.

"Edison's Platinum Lamp on column support, 1879."—E. Benjamin Andrews 1895

Platinum Lamp

"Edison's Platinum Lamp on column support, 1879."—E. Benjamin Andrews 1895