What a winning combination?
[7703] What a winning combination? - The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. - #brainteasers #mastermind - Correct Answers: 2
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What a winning combination?

The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.
Correct answers: 2
#brainteasers #mastermind
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A brilliant young boy was app...

A brilliant young boy was applying for a job with the railways. The interviewer asked him: "Do you know how to use the equipment?" "Yes", the boy replied. "Then what would you do if you realized that 2 trains, one from this station and one from the next were going to crash because they were on the same track?" The young applicant thought and replied "I'd press the button to change the points without hesitation." "What if the button was frozen and wouldn't work?" "I'd run outside and pull the lever to change the points manually" "And if the lever was broken?" "I'd get on the phone to the next station and tell them to change the points," he replied. "And if the phone was broken and needed an electrician to fix it?" The boy thought about that one. "I'd run into town and get my uncle" "Is your uncle an electrician?" "No, but he's never seen a train crash before!"
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Spectrophotometer

In 1935, the first U.S. patent for a spectrophotometer was issued to Professor Arthur Cobb Hardy of Wellesley, Mass. (No. 1,987,441) which he called a “photometric apparatus.”It could detect two million different shades of colour and make a permanent record chart of the results. The patent was assigned to the General Electric Company of Schenectady, N.Y. which sold the first machine on 24 May 1935. It used a photo-electric device to receive light alternately from a sample and from a standard for comparison. It eliminated any need for the two beams (from sample and from standard) to travel different optical paths which in previous designs could introduce inaccuracies if one path varied from the other.«[Image: a "GE-Hardy" double-beam recording spectrophotometer photographed in 1938 showing Walt Disney with the instrument at his studios.]
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