Canada's one-dollar coin has gone through many different designs over the years, from the silver dollars of the mid-20th ...

Equipment: A 6' long plexiglass tube containing a "coin" and a "feather". The tube is sealed and can be evacuated. What it does: When the tube is evacuated, the "coin" and "feather" fall at the same ...

Weighing an impressive 10 kilos, the "Big Silver Maple Leaf" is an unforgettable tribute to one of the investment market's most popular silver bullion coins ...

[describes an experiment in which Boyle contrived to drop a small cross made of four feathers in an evacuated container. This is presumably a fore runner of the coin and feather demonstration. Will ...