Thames & Kosmos Glowing Chemistry handleiding

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Thames & Kosmos

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Handleiding

EXPERIMENT 7

UV detective

Your UV lamp is capable of making all sorts

of natural and artificial substances glow. See

what you can get your hands on.

YOU WILL NEED

› UV lamp

› Various household or office items

HERE’S HOW

1. Walk through the house (in the dark) and try

testing everything you can find to see

whether it glows under the light of your UV

lamp.

2. For example, you might have luck with

reflective vests, text highlighters, sticky

notes, security strips on paper money,

stamps, discarded glow sticks, and of course

paper. Test your teeth and clothing too.

Sometimes, threads of dust will show up as

bright dots on dark clothes.

WHAT’S HAPPENING

A lot of objects contain colors or dyes

that are fluorescent or particularly

bright in the daylight. They will also

glow under a UV lamp. In reflective

vests, these fluorescent materials help

to make them extremely eye-catching.

Some bank notes contain a UV-

fluorescent security strips that make

them easy to recognize as authentic,

and that therefore also make them

hard to counterfeit.

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