The opening riff of Deep Purple’s 1972 hit “Smoke on the Water” is one of the most iconic musical sequences in classic rock history, but according to the musician who wrote it, the riff’s ...

Researchers speculated that the distinctive smoke might be a result of gold nanoparticles that are spat out into the smoke. Circumstantial evidence would back this theory; the 17 th century ...

Experiments on a highly explosive substance called fulminating gold reveal why its detonation produces unusual purple smoke 1. More than 400 years ago, alchemists discovered fulminating gold, a ...