Is lifting gas? That’s pretty cool.
Technically yes, but practically no. Air is 78% nitrogen. Nitrogen is 3.3% lighter than air. Helium is 86.2% lighter than air. Hydrogen is 93% lighter than air.
No.
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Technically yes, but practically no. Air is 78% nitrogen. Nitrogen is 3.3% lighter than air. Helium is 86.2% lighter than air. Hydrogen is 93% lighter than air.