"Freedom is never more than one generation away from extinction. We didn't pass it to our children in the bloodstream. It must be fought for, protected, and handed on for them to do the same. "
- Ronald Reagan - 247
Say what you mean and mean what you say. - 248
An 800 pound hot air balloon can ignore gravity by reducing density and increasing buoyancy. - 281
Aircraft can ignore gravity by increasing thrust and lift. - 282
Underwater air bubbles ignore gravity and float to the surface of the water. This is due to density and buoyancy of the bubble compared to the surrounding water.
Gravity cannot keep the air bubble down under the water. - 283
The theory of gravity is falling down. - 284
