What number belongs in the m...
[1711] What number belongs in the m... - What number belongs in the missing circle? - #brainteasers #math #riddles - Author: The Math Guru - Correct Answers: 77 - The first user who solved this task is Sanja Šabović
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What number belongs in the m...

What number belongs in the missing circle?
Author: The Math Guru
Correct answers: 77
The first user who solved this task is Sanja Šabović.
#brainteasers #math #riddles
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Back-Up Sensor

Inventor of the automobile back-up Sensor -
I bet you think it was Ford, maybe GM, how about Chrysler? No, then how about Mercedes Benz?
No, not at all, it was a Chinese farmer!
Most of the newest cars have a Back-Up Sensor that warns the driver before the rear bumper actually comes in contact with something. Most people probably think that this valuable feature came out of the minds of great engineers, but it was recently disclosed that the concept was first developed by a Chinese farmer. His invention was simple and effective. It emits a high-pitched squeal when the vehicle backs into something.

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Vladimir Kosma Zworykin

Born 30 Jul 1889; died 29 Jul 1982 at age 92.Russian-American physicist and electronics engineer who is known as “the Father of Television.” Concurrent with the start of radio broadcasting, Zworykin was developing a system of transmitting sound and pictures. Other inventors were using a motorized, mechanical scanning system with rotating disks capable of a picture about one inch square. It was heavy, bulky and impractical for home use. Zworykin, at Westinghouse, instead developed an electronic scanning television system using his innovations, the iconoscope and kinescope, the forerunners of today's television camera. He also invented the electron microscope.
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