'Dry region' diaporamas de présentation

Please enter the room quietly and make note of the class work and homework in ?your agendas.

Please enter the room quietly and make note of the class work and homework in ?your agendas. Will the person responsible for retrieving ?the journals for your table please do so. . TIPS ON NOTE TAKING:.

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How Glow-in-the-dark works

How Glow-in-the-dark works. All glow-in-the-dark products contain phosphors A phosphor is a substance that radiates visible light after being energized. Phosphors have three characteristics: The type of energy they require to be energized The color of the visible light that they produce

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