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20. Fluorescent Light​

Sagot :

Answer:

Fluorescent lamps are a specific type of gas-charged luminaire that produce light through a chemical reaction that involves gases and mercury vapor interacting to produce UV light inside of a glass tube. The UV light illuminates a phosphor coating on the inside of the glass tube which emits a white “fluorescent” light.

Explanation:

The Bad: Fluorescent tubes & CFL bulbs contain a small amount of mercury gas (about 4 mg) – which is toxic to our nervous system, lungs and kidneys. So long as bulbs stay intact, the mercury gas is no threat. This means bulbs should be handled properly to avoid breakage.