Thames & Kosmos Glowing Chemistry handleiding
Handleiding
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EXPERIMENT 13
28
A star shines in the
darkness
The objects investigated up to now will only
emit light while you shine UV light on them.
The star is a different case.
YOU WILL NEED
› UV lamp
› Star
› Bright lamp
HERE’S HOW
1. Place the star under a bright light or in the
sunlight for a moment.
2. Take the star into a dark room. It will emit
a weak greenish light, which will
gradually get weaker over the course of
about an hour.
1
2
BONUS EXPERIMENT:
Star with UV lamp
Shine the UV lamp on the star in a dark
room. It will shine brightly because the
material used in it is also fluorescent. And
it keeps shining because it absorbs the UV
light.
WHAT’S HAPPENING
The star contains a substance that stores the
incoming light energy and then gradually emits it
in the form of light. This phenomenon, known as
phosphorescence, is used in materials such as
glow-in-the-dark paints. It comes in handy for
warning signs that must be visible in the dark,
and in alarm clocks meant to be visible in a dark
bedroom. There are even winter coats that come
with a glowing element, so children wearing
them are easier to see in the dark.
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Productinformatie
| Merk | Thames & Kosmos |
| Model | Glowing Chemistry |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 26917 MB |
