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Tag: Helium

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Steve Spangler on The Ellen Show September 2007

Steve Spangler on The Ellen Show September 2007

509 Views 3 years ago
Balloon Boy – Helium Balloon Lifting Test

Balloon Boy – Helium Balloon Lifting Test

413 Views 13 years ago
  • Astronomie
  • Experimente
  • Fizica
  • Istorie
  • Artificial Intelligence
  • Mergi la Kidibot.ro