The word "phonograph" was Edison's tradename for his musical playback device, which
played wax cylinders rather than flat disks.
Photocopier
The photocopier was invented by Chester Carlson.
Photography Still
Learn about the Camera Obscura, the history of photography, the significant processes,
polaroid photography and the invention of photographic film. See Also - Photography
Timeline
Photoluminescence Related
Photoluminescence spectroscopy is a contactless, nondestructive method of probing the
electronic structure of materials.
Photophone
Alexander Graham Bell's photophone - ahead of its time.
Phototypesetting
Louis Moyroud and Rene Higonnet invented the first practical phototypesetting machine.
Photovoltics Related
Solar cells or PV cells rely on the photovoltaic effect to absorb the energy of the sun and
cause current to flow between two oppositely charge layers. See Also - How a Photovoltic
Cell Works, Making N and P Material for a Photovoltic Cell
Piano
The piano first known as the pianoforte was invented by Bartolomeo Cristofori.
Piggy Bank
The piggy bank's origin owes more to the history of language.
Pill
The patents and people behind the first oral contraceptives.
Pillsbury Doughboy
On October, 1965, Pillsbury debuted the loveable 14-ounce, 8 3/4-inch character in a
Crescent Roll commercial.
Pinball
The history of pinball.
Pizza
The history of pizza.
Plastic
Learn about the history of plastic, the uses for and the making of plastic, plastic in the
fifties and more.
Play-Doh
Noah McVicker and Joseph McVicker invented Play-Doh in 1956.
Pliers
Simple pliers are an ancient invention. Two sticks probably served as the first uncertain
holders, but bronze bars may have replaced wooden tongs as early as 3000 BC.
Plow - Gemeral
ron
(Ron)
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