All fireworks rely on a combustion process that has three basic requirements: some sort of fuel to burn, a supply of oxygen, and a source of energy to initiate the reaction between the fuel and the...
The thick liquid used to be called "oil of vitriol," since it was originally made by the distillation of "green vitriol," or iron sulfate as we know it today.聽 It was so corrosive and nasty that...
Imagine the surprise of the first cave person who ever glanced into a reflecting pond.聽The image probably wasn't too pleasing but the effect was surely intriguing.聽Vanity was instantly born and the...
