Chemical element with symbol He and atomic number 2.
1 But however important cosmologically, the hydrogen - helium cycle doesn't exactly fire the imagination.
2 Current options include helium balloons, observation masts and free flying multi-rotor drones.
3 But a few contain much higher concentrations that support commercial helium extraction.
4 The primary reason to use liquid helium is that it is cold.
5 You can usually find helium in places where you find natural gas.
6 Assume the lifting capacity of helium is .067 pounds per cubic foot.
7 It should be clear that I am not an expert on helium .
8 Cantu also used lasers, particle guns, helium and liquid nitrogen to cook.
9 Hours after taking flight, a helium leak developed in the doomed craft.
10 These stars are not so blue as the helium and hydrogen stars.
11 But next time you see someone with helium balloons, don't berate them.
12 A helium yelp straight out of Brooklyn, instantly recognisable and completely unforgettable.
13 It was then flash-frozen in liquid helium before it could chemically self-destruct.
14 It looked like a helium balloon on the end of a string.
15 Then I imagined myself filling with helium , and suddenly I was off.
16 The guests drink punch, inflate balloons with helium , sing, dance and eat.
Другие примеры для термина "helium"
Grammar, pronunciation and more
Helium в диалектах
Соединенные Штаты Америки