♪guitar strum♪
♪What's this?♪
♪Who's that?♪
♪When was this?♪
♪Where was that?♪
♪and why to all the above?♪
♪Questionnaires!♪
♪You've seen it there♪
♪behind the clouds♪
♪that big old sky♪
♪just hanging round.♪
♪Trouble free, nowt to do♪
♪so why on Earth is it so blue?♪
♪It's down to light♪
♪from our Sun.♪
♪What we see as white's♪
♪in fact a spectrum.♪
♪Colours of the rainbow
shine as one!♪
♪Individual little photons
with a journey of their own.♪
♪Lets have a look
at the path they take♪
♪red here moves like
a lazy snake.♪
♪Little blue moves like
a wriggling worm♪
♪racing for the Earth
either end of the spuctrum!♪
♪An eight minute dash
and they're already here♪
♪entering Earth's atmosphere.♪
♪Plain sailing all that
way through space♪
♪now the snake and the worm
get hit in the face...♪
♪...by molecules...♪
♪...oxygen...♪
♪...nitrogen...♪
♪ ...air!♪
♪and the basis of the race
has become unfair.♪
♪With a long red wave
the snake slips by♪
♪but the little blue wriggle
hits everything in sight!♪
♪So red goes straight
blue light's scattered♪
♪Red wins the race♪
♪but it doesn't really matter.♪
♪after bouncing all about
before breaking through♪
♪what colours in the sky?♪
♪that little guy blue.♪
