Don’t waste time working on problems you have no way to attack. He points out that anti-gravity, time travel, and teleportation would be very lucrative. But why work on them when there appears ...
In the late 1700s, he devised a solution: a kind of anti-gravity chamber that he called a tourbillon, a French word meaning ‘whirlwind’. A single-axis tourbillon in motion. This gif shows two ...