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Q&A LED light or heating element?

To generate heat electrically inside a balloon for lift would a 20 watt LED light or a 20 watt heating element make more heat to lift a small closed hot air balloon droid and solar cell? Having a ...

9 answers  ·  posted 6y ago by Muze the good Troll.‭  ·  last activity 6y ago by Muze the good Troll.‭

Question reality-check airships flight light ships air