Lots More InformationRelated HowStuffWorks Articles
- How Helium Balloons Work
- How Hot Air Balloons Work
- How Blimps Work
- How is helium made?
- What causes helium balloons to lose their lift after a day or two?
High material costs and relatively low efficiency have held solar energy back as an alternative to fossil fuels. But that hasn't stopped people from finding some practical everyday applications for solar panels.
How many regular-sized helium-filled balloons would it take to lift someone? What is the equation to figure it out?