Today in Tech History – November 11, 2017

Today in Tech History logo1675 – Gottfried Leibniz demonstrated integral calculus for the first time to find the area under the graph of good ol y=f(x). That is, if you believe what he wrote in his notebooks.

1930 – Albert Einstein, yes that Albert Einstein and Leo Szilard received a US patent for a refrigerator that required no electricity, just a heat source. Electrolux bought up the patents.

2006 – The Sony PS3 went on sale with a built-in Blu-ray player and hard drive.

Read Tom’s science fiction and other fiction books at Merritt’s Books site.