This means that balloons can carry more weight on a cold day, or if the air inside the balloon is made very hot.
The number of passengers a balloon can carry depends on its size.
The balloon carried equipment that was set to automatic.
A balloon carried Hood up to 460 meters above the ground where it was detonated.
The balloon would carry instruments for making wide-ranging observations just above the landscape.
High-altitude balloons can carry scientific instruments above 99.7 percent of the atmosphere.
The balloon carries a transmitter powerful enough to relay readings to a satellite.
These balloons carried recording instruments beyond even the highest clouds to a height of 17 kilometers.
"Well, the Japanese did have some plans in mind for balloons carrying biological agents-deadly diseases-over here near the end of the war."
Two hundred unmanned balloons carried small bombs although few bombs actually hit the city.
