Use precise geolocation data and actively scan device characteristics for identification. This is done to store and access ...

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 ...

[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 ...