August 11 1942
Today in 1942, Hedy Lamarr patented frequency-hopping, the basis for modern WiFi & Bluetooth. http://t.co/SiWhiv2D3L pic.twitter.com/3zozclTzJx
— Science Friday (@scifri) August 11, 2014
Category: retweets
John Scott Russell’s birthday!
John Scott Russell, born today in 1808, discovered soliton waves in the canal just outside Edinburgh. http://t.co/u0glprvYAE
— ICMS Edinburgh (@ICMS_Edinburgh) May 9, 2014
Al-Karaji
Al-Karaji (953-about 1029), “regarded as the first person to free algebra from geometrical operations”, born 13 Apr http://t.co/aABEYxo7KO
— Maths History (@mathshistory) April 13, 2014
Maths history
Marie-Sophie Germain (1776-1831) made a major contribution to number theory, acoustics and elasticity, born 1 Apr http://t.co/r4Au2iwh8b
— Maths History (@mathshistory) April 1, 2014