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    Listed under:  Science  >  Forces and energy  >  Fundamental forces  >  Electromagnetism  >  Electromagnetic radiation  >  Light  >  Pigments
    Video

    Dyeing with red cabbage!

    • TLF-IDM018842

    Many natural products, such as red cabbage and turmeric, can be used as a natural source of colour to dye fibres. Watch the dyeing demonstration in this clip to see how. Discover the chemistry of natural dyes, including the bonding properties of different pigments and how acid-base reactions can alter the colour of pH-sensitive ...

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    Interactive

    Light and reflection: using mirrors

    • TLF-IDL2042

    Change the direction of a light beam using a mirror. Light the way for a scribe to see inside a pyramid. Position mirrors to direct a beam of sunlight. Choose mirrors that will reflect light at a suitable angle. Find animals on a dark night. Choose a mirror that will reflect light at a suitable angle. Notice that the light ...

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