Showing posts with label Invention. Show all posts
Showing posts with label Invention. Show all posts

Saturday, September 23, 2017

What is Operation Greenhouse 1951?

Operation Greenhouse was a series of nuclear tests conducted at Eniwetok Atoll in early 1951 to test various design principles that would later become pivotal in the development of thermonuclear weapons. The purpose of these tests was to reduce the size, weight, and amount of fissile material necessary for nuclear weapons, while simultaneously increasing their destructive power.*




Source:
*http://www.atomicheritage.org/history/hydrogen-bomb-1950

Sunday, September 1, 2013

Who Made Scratch off Lottery?



Beginning: According to New York Times Article,In 1960, Grocery stores handed out free cards covered with a waxy coating that hid a cash prize, which was a small amount , such as half-penny. They would printed 200 different tickets only few of which would be winners. 

Problem with Ticket: those free cards with winning prizes were easy to find the winning tickets because there was special design, a stray mark or a serial number  
Solution: 
 In '70s, two Card company workers named John Koze and Dan Bower came up with idea to make this free cards (Lottery) into money making tool. They printed about 20000 lottery tickets with so many different patterns which makes impossible to identify the winning one. They Flew to Boston and meet with Massachusetts lottery officials and promoted their system as secure and impossible to crack

                       

Source: Who Made that Scratch Off Lottery Ticket <http://www.nytimes.com/2013/07/07/magazine/who-made-that-scratch-off-lottery-ticket.html> 

How many words are there in English?

Unfortunately, there's no exact count of the number of words in the English language because languages are flexible and expanding.