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| RAINBOWS. Arcs of Colour. |
If you've over looked at a rainbow and wondered how
all those bright colours got into the you're not alone.
The ancient Greek, thought thee arcs of colour were
signs from the gods to warn people - that terrih1le wars or storms work grim:
to happen. The Norse people believed a rainbow was a bridge the gods used to
walk down from the sky to the Earth. Other legends said there was a pot of gold
waiting o the end of a rainbow.
But as beautiful as rainbows are, they aren't magic.
And they aren't solid enough to walk on. In fact, a rainbow is just coloured
light. The seven colours are always the same and appear in the same order: red,
orange, yellow, green, blue. Indigo (a very deep blue), and violet. The name
'Roy G. Biv' helps you remember the first letters and the order of the colours.
Rainbows often appear after or at the end of a storm -
when the Sun is shining again but there is still some rain in the air. The
sunlight looks white, but all seven rainbow colours are mixed together in it.
So when a heam of sunlight passes through the raindrops, it's broken into the
seven different colours.
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| RAINBOWS. Arcs of Colour. |
But you don't have to wait for rain to see rainbows.
They can show up in the spray of a fountain or a waterfall, or you can make
your own with a hosepipe. Set the nozzle to create a spray, aim it away from
the Sun, and then stand between the Sun and the spray. You've got an instant
rainbow!
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