Carbon Penny Farthing MTB.

Through a vacuum all frequencies of light travel at the same speed, but through a 'medium', like a glass prism, or our oxygen/nitrogen atmosphere, the higher frequencies, like blue, indigo, violet are absorbed and re-emitted more often, simply because they are at a higher frequency, and hence they are scattered more. The lower frequencies like red, orange and yellow conversely pass through without as much scattering as they are absorbed and re-emitted less often, due to the lower frequency.
 
When the coal fired coffee machines are banned and replaced by wind power poodles is going to need a new career so I am trying to help upskill him.
 
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