during which test chemicals are not heated above room temperature. Each PPD derivative has a characteristic ultraviolet absorption spectrum, and qualitative analysis is possible by selection of a ...

Exactly 100 years ago, famed Austrian physicist Erwin Schrödinger (yes, the cat guy) postulated his eponymous equation that ...

In physics, a phase transition is a transformation of a substance from one form to another. They happen everywhere, from ...

A star’s colossal flare has revealed an unexpected origin for some of the universe’s heaviest elements, including gold and ...

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