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  • How It Works

    LETTER OF THE MONTH

    Mar 18, 2021 3 minutes

    Hot headed

    ■ Hi HIW, How come black-haired people’s heads get hotter than blondes? Me and my friend noticed that my head was hot every time the Sun shone on it for a long time, while my blonde friend never had a problem. Lezeiram

    This is a good question Lezeiram, and it is all to do with why we see different objects as different colours. Black and dark-coloured objects absorb more of the light from the Sun, while lighter coloured objects will reflect more of its wavelengths. These wavelengths of visible

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