Question of the Week Podcast

Question of the Week episode

Sun, 24th Oct 2010

Why might a person not be able to see coloured ink on a whiteboard?

Whiteboard diagram (c) Circuit-fantasist

Why might a person, who apparently isn't colour-blind, not be able to see red or green on a whiteboard? What is colour-blindness anyway? We try to find the answer in this Question of the Week. Plus, we ask which is worse for the environment - a few weeks of volcanic eruption or a few weeks of aviation.

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In this edition of Question of the Week

Full Transcript

  • Why can't he see red or green ink on a whiteboard?

    I have a friend who can't see anything written in red or green on a whiteboard. Being the curious person I am, I've tried to get him to explain why this is - but unfortunately he can't remember much of the diagnosis. I've also tried to search on the internet but cannot find one s...



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