What is a property of certain chemicals, where ultraviolet radiation (UV) is absorbed and then visible light is emitted (i.e produced).
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Card 7
Front
Nowadays they'll print special markings in fluorescent ink on bank notes to do what?
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Card 8
Front
In detecting forged bank notes, it's the amount of radiation _____ that your _____ and _____.
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Card 9
Front
Why do fluorescent colours look so bright?
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Card 10
Front
Why are fluroescent lamps safe to use?
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Card 11
Front
What does security pens use?
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Card 12
Front
When disinfecting water, what should you use?
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Card 13
Front
Where may you use X-rays.
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Card 14
Front
X-rays pass easily through flesh, but do they pass just as easily through denser materials such as bones or metal?
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Card 15
Front
X-rays pass easily through flesh but not so easily through denser material like bones or metal. So it's the amount of radiation that's _____ (or not _____) that gives you and X-ray image.
