Kam loves clouds and the skies.
“Mum, yes Kam”
“Why are clouds in the sky”
“Well, they bring rain.”
“No, not the grey clouds, the white ones, they look like stars, but very close.”
“White clouds are full of water droplets, the same as grey rain clouds.”
“They can’t be, water is clear and you can see through it. The white clouds are white, not clear. Why are clouds white?”
Absolutely Kam. I need more detail; at the moment I don’t know. Let’s find out.
White Clouds and Light.
Clouds are full of lots of tiny, round water droplets or ice crystals. Clouds forms when water vapour condenses. (Changes state from vapour to liquid).
The sun’s light travels in wavelengths and scatters or refracts as it passes through the droplets. The water droplets are large enough to scatter light within visible spectrum.
The 7 unique visible spectrum wavelengths are the colours : red, orange, yellow, green, blue, indigo and violet light. When these colours combine, we see white light.
(The Sun emits lots of other types of energy; we cannot see these energy wavelengths with our eyes.)
A Note to You and Me.
I think I know what is coming next. When I paint and mix colours together, my painting is black not white. Let’s see!
If you can help, I’d appreciate it. Please add a comment if you can point me in the right direction.
Thank you for reading. If you like this post please tell us about it, Kam is eager to see that people do actually read his questions…. Thanks. X