Hydrogen vs. Helium Balloon Experiment | Explosion of the Week | Scitech WA Scitech WA 1:17 4 years ago 100 770 Скачать Далее
The Hidden Dangers of Inhaling Helium: What You Need to Know! Only One in a Million 4:56 8 months ago 35 Скачать Далее
Why Scientists Are So Worried About Running Out Of Helium | Unveiled Unveiled 9:09 2 years ago 111 747 Скачать Далее
helium is fun (warning) so things I do are dangerous Calamari Marie 0:16 2 years ago 75 Скачать Далее
