What hides this stereogram?
[6321] What hides this stereogram? - Stereogram - 3D Image - #brainteasers #stereogram #3Dimage
BRAIN TEASERS

What hides this stereogram?

Stereogram - 3D Image
#brainteasers #stereogram #3Dimage
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John was driving when a police...

John was driving when a policeman pulled him over. He rolled down his window and said to the officer, "Is there a problem, Officer?"
"No problem at all. I just observed your safe driving and am pleased to award you a $5,000 Safe Driver Award. Congratulations. What do you think you're going to do with the money?"
John thought for a minute and said, "Well, I guess I'll go get that drivers' license."
Judi, sitting in the passenger seat said to the policeman, "Oh, don't pay attention to him -- he's just a wise guy when he's drunk and stoned."
Brian from the back seat said, "I told you guys we wouldn't get far in a stolen car!"
At that moment, there was a knock from the trunk and a muffled voice said, "Are we over the border yet?"
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Liquifaction of oxygen

In 1879, the liquefaction of oxygen was announced by Raoul Pierre Pictet (1846-1929), a Swiss chemist and physicist, by sending a telegram to the French Academy: Oxygen liquefied today under 320-atm and 140 degrees of cold by combined use of sulfurous and carbonic acid. French physicist Louis Cailletet made a similar announcement two days later. Pictet's early interest was in ice-making machines. Later, he studied extremely low temperatures and the liquefaction of gases. Both Pictet and Cailletet used both cooling and compression to liquefy oxygen but they achieved this using different techniques. Pictet's method had an advantage in that produced the liquid gas in greater quantity and was easier to apply to other gases.[Image: part of a Pictet machine to cool down glycerine, which was pumped through a piping system in the first artificial skating track:]
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