Thames & Kosmos Glowing Chemistry handleiding

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Thames & Kosmos

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Handleiding

EXPERIMENT 1

Shirts with a light blue

glow

Test your UV lamp and make an astonishing

discovery in the process!

YOU WILL NEED

› UV lamp

› White paper, articles of clothing, etc.

HERE’S HOW

1. In a dark room, turn on the UV lamp and

point its beam at a sheet of white paper or an

article of white clothing (shirt, undershirt,

t-shirt, blouse, etc.).

WHAT’S HAPPENING

The white materials glow with a mysterious light

blue light. There are chemical substances in the

piece of clothing that absorb the UV light and

convert it into visible light. This phenomenon is

known as fluorescence.

Detergent manufacturers add fluorescent

substances (known as brighteners) to their

products to make your washed laundry whites

look more dazzling. Paper manufacturers use the

same method to make their white paper look

brighter.

Some dance clubs use UV light (also known as

black light) to create special effects for the

customers’ enjoyment, by making the white

parts of their clothing glow as they dance.

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