Communication Timeline . \:

$: Communication Timeline . \:$
COMMUNICATIONTIMELINE. \:By: Paige Copeland.

2400 BC The abacus, the first known calculator,

invented in Babylonia.

http://www.ee.ryerson.ca/~elf/abacus/history.html

http://www.ee.ryerson.ca/~elf/abacus/history.html

1280 Eyeglasses were invented by Salvino

D’armate.

http://www.antiquespectacles.com/history/ages/through_the_ages.htm

http://www.antiquespectacles.com/history/ages/through_the_ages.htm

1450Johann Gutenberg invents a printing press using removable metal type.

http://www.historyguide.org/intellect/press.html

http://www.historyguide.org/intellect/press.html

1500 Ball bearing invented by Leonardo Da Vinci

together with flying machines, including a helicopter, the first mechanical calculator and one of the first programmable robots.

http://www.newworldencyclopedia.org/entry/ball_bearing

http://www.newworldencyclopedia.org/entry/ball_bearing

1581 Pendulum invented by Galileo.

http://hyperphysics.phy-astr.gsu.edu/hbase/pend.html

http://hyperphysics.phy-astr.gsu.edu/hbase/pend.html

1679 Pressure cooker invented by Denis Papin.

http://missvickie.com/library/history.html

http://missvickie.com/library/history.html

1752 Lightening rod invented by Benjamin

Franklin.

http://www.fi.edu/pieces/hongell/

1792Mechanical semaphore is invented in France.

http://www.navy.gov.au/w/images/Semaphore_2006_8.pdf



1798 Vaccination invented by Edward Jenner.

1826 Photography invented by Joseph Nicephore

Niepce.

http://www.photography.com/

1869 Mendeleev produces the Periodic Table.

http://www.wou.edu/las/physci/ch412/perhist.htm

http://www.wou.edu/las/physci/ch412/perhist.htm

1876Alexander Graham Bell invents the telephone, transmitting the sound of the voice clearly over electrical wires.

http://fi.edu/franklin/inventor/bell.html

http://fi.edu/franklin/inventor/bell.html

Communication Timeline . \:

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