Retro Newton's Cradle
What did every power-brokers desk in the 80's need on it? Yup - a Newton's Cradle.
The Newton's Cradle, originally designed by an English actor is a device that demonstrates conservation of momentum and energy using a series of swinging spheres. When one sphere at the end is lifted and released, it strikes the stationary spheres, transmitting a force through the stationary spheres that pushes the last sphere upward. The last sphere swings back and strikes the still nearly stationary spheres, repeating the effect in the opposite direction. Mesmerising and a terrifically good time waster.
This retro toy would make a great little gift or stocking filler.
Bought this for my teenage son for Christmas and he loves it. It is very small, as reflected in the price, but that's OK as he has a thin bookcase it goes on.
Much smaller than expected but looks okay.