And one of them that is near and perhaps dear to us is Hedy Lamarr. Wireless Ethernet uses spread spectrum technology to transmit data as radio waves, . Spread spectrum spreads the transmission over a broad frequency range, from 902 thru 928 MHz. Eavesdropping is virtually eliminated because only the receiving unit is able to un-spread the transmission. The concept for spread spectrum was created by actress Hedy Lamarr back in 1940.  It was put to use in the 1960's for use in the military and is so effective that it is still in use today.

http://www.hedy-lamarr.org/invention.htm

Del

John Glass wrote:

Nice resource:

 

"For much of human history, women were officially excluded from the scientific realm. However, in spite of their invisibility in the history narrative, this did not mean that science was exclusively a man’s world. Many women, throughout the centuries, have managed to overcome their marginalisation and excel in their chosen field, making vital contributions to the sum of human knowledge."

 

Link to free .pdf text and .mp3 files:

 

<http://ec.europa.eu/research/index.cfm?lg=en&pg=wisaudiobook>

 

John

 

 

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