USKINGS - Old Events - April 25, 2018 - Bell Labs Demonstrates the First Practical Silicon Solar Cell in 1954
(uskings.us) Solar cells, which convert sunlight into electrical current, had their beginnings more than a hundred years ago, though early solar cells were too inefficient to be of much use. In April, 1954, researchers at Bell Laboratories demonstrated the first practical silicon solar cell.
USKINGS - Old Events - April 18, 2018 - 1st crossword puzzle book published by Simon & Schuster in 1924
(uskings.us) The first book of crossword puzzles ever published was released on this date in 1924. It was also the first book published by Simon & Schuster.
USKINGS - Daily Highlighs - April 17, 2018 - World's first electrified road for charging vehicles opens in Sweden
(uskings.us) Stretch of road outside Stockholm transfers energy from two tracks of rail in the road, recharging the batteries of electric cars and trucks
President Trump delivered his first speech to Congress Tuesday in a wide-ranging address that lasted a little over an hour, making it the second-longest such speech among modern presidents.