4steps from the big bang
116things can go into it
air separation unit
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Cools air to about −190 °C until it turns liquid, then boils off each gas at its own temperature.
First appeared1895 (131 yrs ago)
Made Of
Everything is made of something.← What it takes
What it leads to →
Made from
Cools air to about −190 °C until it turns liquid, then boils off each gas at its own temperature.
From the big bang to air separation unit
The most direct chain from the start of the universe, following what things are made from and, for living things, what they evolved from. Each step shows when it first appeared.
big bang13.8 bn yrs ago
Hehelium13.8 bn yrs ago
CO2 laser1964
steelc. 1,800 BCE
air separation unit1895