I WONDER - What Is A Fluorescent Lightbulb?

The video explains how gas mixtures, typically containing mercury vapor, emit ultraviolet light when excited by an electric current. This ultraviolet light then excites a phosphor coating inside the bulb, producing visible light. These bulbs are more energy-efficient than incandescent bulbs but contain mercury, a toxic element.

What type of gas mixture is usually contained in these bulbs?

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How does ultraviolet light contribute to the production of visible light in these bulbs?

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What happens to ultraviolet light when it is excited by an electric current?

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What are the advantages of using these bulbs compared to incandescent light bulbs?

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What toxic element do these bulbs contain?

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