What hides this stereogram?
[1984] 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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OLD IS WHEN...

"OLD" IS WHEN - Your sweetie says, "Let's go upstairs and make love," and you answer, "Pick one; I can't do both!"

"OLD" IS WHEN - Your friends compliment you on your new alligator shoes and you're barefoot.

"OLD" IS WHEN - A sexy babe catches your fancy and your pacemaker opens the garage door.

"OLD" IS WHEN - Going braless pulls all the wrinkles out of your face.

"OLD" IS WHEN - You don't care where your spouse goes, just as long as you don't have to go along.

"OLD" IS WHEN - You are cautioned to slow down by the doctor instead of by the police.

"OLD" IS WHEN - "Getting a little action" means you don't need to take any fiber today

"OLD" IS WHEN - "Getting lucky" means you find your car in the parking lot.

"OLD" IS WHEN - An "all nighter" means not getting up to use the bathroom.

"OLD" IS WHEN - You are not sure these are jokes.
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Liquid oxygen

In 1877, Louis-Paul Cailletet (1832-1913) became the first to liquefy oxygen. Shortly after, he also was first to liquefy nitrogen, hydrogen, nitrogen dioxide, carbon monoxide, and acetylene. Cailletet realized that the failure of others to liquefy the permanent gases, even under enormous pressures, was explained by Thomas Andrews's concept of critical temperature. He succeeded in producing liquid oxygen by allowing the cold, compressed gas to expand, depending on the effect discovered by Joule and Thomson, that cooled the gas to below its critical temperature. In later experiments he liquefied nitrogen and air. Raoul Pictet, working independently, used a similar technique. He also invented the altimeter and the high-pressure manometer.Image: Cailletet's Liquefier.
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