At certain times of the day when it's sunny, and the light hits the window in a certain way, this beautiful little rainbow of colour is projected into my kitchen. It's one of those Wonders that can lift you out of the ordinary for a moment or two....and it did the other day when I took this - well it did, until my son asked me how it happens, and all I could remember was the order of the colours (good old 'Richard Of York Gave Battle In Vain') and something about refraction and bendy light...
So we looked it up.
It turns out that a ray of light does bend or change direction as it travels through the glass, separating into its seven component colours and forming a rainbow. They separate because each colour passes through the glass at a different speed.
We both learnt something.
Scrolling through, there were a few simple light refraction experiments to do with kids, and it crossed my mind that making a rainbow appear had got to be a surefire winner. How could they not be impressed?
A glass prism would be great, but if you haven't got one, put a half-full glass of water in the direct line of any sunlight, and then look around the room for a rainbow. Once you've found it, get the kids to 'catch' the rainbow on a piece of white paper so they can see the colours clearly. Magic.
The Gallery theme this week is Colour