What hides this stereogram?
[2308] What hides this stereogram? - Stereogram - 3D Image - #brainteasers #stereogram #3Dimage

What hides this stereogram?

Stereogram - 3D Image
#brainteasers #stereogram #3Dimage
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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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Urea synthesis

In 1828, German biochemist Friedrich Wöhler informed Jakob Berzelius that he had synthesized the organic chemical, urea. This was a landmark event, for it was the first time a material previously only associated with the body function of a living thing, was made from inorganic chemicals of non-living origin. In this case, urea had formerly been known only from the urine of animals.
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