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Re: How many colors does a rainbow have?

by adamcrussell (Hermit)
on Jan 25, 2009 at 02:05 UTC ( #738742=note: print w/replies, xml ) Need Help??


in reply to How many colors does a rainbow have?

All I remembered was that the colors could be remembered via the "name" Roy G Biv...I let my laptop do the counting. :)
$ echo roygbiv | tr -d "\n" | wc -m
Or for much nicer perl powered output:
$ echo roygbiv | perl -e '$a=<STDIN>;chomp $a;printf "There are %d col +ors in the rainbow.\n",length $a'

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[ambrus]: Today I accidentally cut my hand while carrying a computer. On the display part of the motherboard that sticks out at the back of the chasis and has ports, there's this thin metal sheet with holes cut for the ports, to guide plugs into the sockets.
[ambrus]: This sheet has sharp needle-like parts, 0.004 long and less than 0.001 wide, that can get bent to point outwards, and one of these cut into my palm when I lifted the box.
[ambrus]: So now when I choose what motherboard to buy for my new home computer, I have one more specific property to guide me. Useful, because there's so many different boards to choose from.

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