Technology

The Arithmometer was the first mass-produced calculator invented by Charles Xavier Thomas de Colmar.

Iconoscope invented by Vladimir Zworykin.

Atomic bomb dropped on Hiroshima and Nagasaki, Japan

Photophone invented by Alexander Graham Bell.

Steam Locomotive (Blucher) invented by George Stephenson.

Franklin stove invented by Benjamin Franklin.

Steamboat invented by John Fitch.

Movable type printing press invented by Bi Sheng.

Pendulum invented by Galileo Galilei.

Pressure cooker invented by Denis Papin.

Ethernet invented by Bob Metcalfe and David Boggs.

Jethro Tull invents mechanical (seed) sower.