a black balloon that is filled with ordinary air the air inside is heated and expands causing an upward buoyancy force the toy market the surface-area to payload-weight ratio is relatively high
What is a solar balloon? What happens when sunlight shines on a solar balloon? What is the use of solar balloons typically limited to? Why is the use of solar balloons typically limited to the toy market?
A solar balloon is a black balloon that is filled with ordinary air. As sunlight shines on the balloon, the air inside is heated and expands causing an upward buoyancy force, much like an artificially heated hot air balloon. Some solar balloons are large enough for human flight, but usage is generally limited to the toy market as the surface-area to payload-weight ratio is relatively high.
question: What is a solar balloon?, answer: a black balloon that is filled with ordinary air | question: What happens when sunlight shines on a solar balloon?, answer: the air inside is heated and expands causing an upward buoyancy force | question: What is the use of solar balloons typically limited to?, answer: the toy market | question: Why is the use of solar balloons typically limited to the toy market?, answer: the surface-area to payload-weight ratio is relatively high