If I take 7 lbs. of air pressure out of a balloon and replace it with 3 lbs. of air pressure, is the balloon inflated or deflated from its previous state?
Hurtling towards the stratosphere the balloon was fitted with weather instruments designed to measure, among other things, temperature, pressure and wind speed.
"When the hairs are soft there is minimal drag, which means you do not apply more pressure, " he says, revealing that for many years he practiced his wet-shave technique on a balloon.