Third, the mass of the beads don't matter at all. If you look at the equation predicting the speed of the chain, you'll see that the mass doesn't show up anywhere.

Ancient Beads with an Otherworldly Origin Researchers analyzed ancient Egyptian iron beads fashioned out of meteoric iron and crafted 2,000 years before the Iron Age. Archaeometallurgist Thilo ...

Ear acupuncture using metal beads can help reduce weight, body mass index (BMI), and body fat in combination with a restricted diet, according to new research being presented at this year’s ...

After being shaken for about a week, thousands of millimetre-sized metal beads arranged themselves into an exotic structure called a quasicrystal – and it was the biggest one yet.