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Here we are going to explain how ultraviolet the intervals of the room are.

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Enrique, Paloma, Sergio and me.

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Here we go!

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I am going to paint a notebook with a normal marker.

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As you can see here, nothing happens.

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But what if we light the fluorescent marker?

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Wow! It's shining! But why does this happen?

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For instance, a substance absorbs ultraviolet light and then sends it again instantly.

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Some of the energy is lost in the process.

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So the sent light has a longer wavelength than the absorbed radiation.

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Making this light visible and making the material glowing.

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so that's why the fluorescent marker glow bye