Thames & Kosmos Master Detective Toolkit handleiding

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Thames & Kosmos

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Handleiding

Ultraviolet ashlight

You can use the ultraviolet ashlight

(UV ashlight for short) to search

for invisible traces of evidence that

become visible under the UV light.

Lights like these are used to look for

evidence at real crime scenes. Before

you can use the lamp, you must insert

the battery. An adult should help you.

Remove the four screws on the bottom

of the ashlight with a Phillips head

screwdriver, insert the battery, and

replace the screws. To turn on the light,

slide the small switch forward.

UV ashlight

On/off switch

Do not shine the light into your

eyes, or the eyes of any other

people or animals.

How does the UV ashlight work?

You can examine the behavior of

various objects and materials under

UV light. In a darkened space, try

shining the light on white paper,

white clothing, reective panels

on backpacks and bicycle clothing,

colored markers, and paper money.

The UV ashlight emits some bluish

visible light and a lot of ultraviolet

light which is invisible to our eyes.

This is also sometimes called black

light. Many everyday things, such as

white clothing, reective strips, and

colored ink on paper, shine brightly in

the darkness when they are irradiated

with UV light.

Bills contain UV-luminous threads as

an anti-counterfeiting measure. You

can easily detect counterfeit money

because it does not light up in the UV

light the same way real money does.

You can read more about the security

features of money on pages 37-39.

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