Originally Posted by
fietsbob
The FIM Superbike Race leathers include a hump at the top of the back, so the trailing edge of the rider's helmet has a bit more laminar flow
rather than the turbulence of a round helmet .. those pointy tail time trial bike helmets are working with the same principles .
Galileo theorized that a feather and a hammer in a vacuum would fall at the same rate, , it took a Moon Landing to prove him right.
Actually, Galileo’s theory was proven long before the Apollo 15 manned moon landing via an evacuated tube using a feather and a one guinea coin by John Miller back in 1761, which was 123 years after Galileo’s great work “Dialogues Concerning Two New Sciences” was first published in 1638
. In the evacuated tube, the feather and the coin would repetitively free-fall at identical rates thus having proven Galileo’s theory
. It’s known as the “Guinea and the Feather” experiment and has been witnessed by countless physics students over many centuries now
.
Apollo 15 astronaut commander David Scott was merely the first human to perform the experiment on a heavenly body that was void of an atmosphere
.
There are various places where the information I provided can be found, not least of which locations is the NASA website I’ve provided a link to below
. If interested, do a “Find on this page” at the NASA website using “John Miller” as the search word…
Hammer and Feather
When it comes to physics and the history thereof, I’d never give anyone a bum steer
. 