News tagged with chlorine

A new blue-light-emitter for fireworks

Conventional fireworks and signal flares that emit a blue flame utilize toxic chemicals as a source of chlorine. Chemists at LMU have now developed the first chlorine-free formulation that emits blue light upon combustion.

dateJul 10, 2014 in Materials Science
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Study finds unprecedented Arctic ozone loss

(PhysOrg.com) -- A NASA-led study has documented an unprecedented depletion of Earth's protective ozone layer above the Arctic last winter and spring caused by an unusually prolonged period of extremely low temperatures in ...

dateOct 02, 2011 in Earth Sciences
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