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The problem with hydrogen is that it is a much smaller molecule than helium and leaks from light, thin-walled containers like balloons. Heck, it can even leak
by FlyMoreRockets 7y ago
The problem with hydrogen is that it is a much smaller molecule than helium and leaks from light, thin-walled containers like balloons. Heck, it can even leak along grain boundaries in metal containers.
- stickfigure 7y agoHelium leaks too, just at a slower rate. Hydrogen is cheaper to top up.
- deleted 7y ago[deleted]
- jfk13 7y agoIf you're trying to keep a massive network of balloons aloft to provide wide-area internet connectivity, the logistics involved in topping up the gas mean that the frequency of top-ups required may be a greater concern than the cost of the gas involved.
- NikkiA 7y agoChemical (non-electrolysis) hydrogen generators are a thing, although not directly useful for larger scale needs like the fuel cell hype, they are adequate for topping up balloons.