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I have branches, but no frui...

I have branches, but no fruit, trunk or leaves. What am I?

Correct answers: 33

The first user who solved this task is Nasrin 24 T.

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The good, the bad and the ugly...

Good: Your husband is not talking to you.
Bad: He wants a divorce.
Ugly: He's a lawyer.

Good: Your husband understands fashion.
Bad: He's a cross-dresser.
Ugly: He looks better than you.

Good: You give 'the birds and the bees' talk to your 14-year-old daughter.
Bad: She keeps interrupting.
Ugly: With corrections

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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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