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

Dyeing with red cabbage!

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 ...

Interactive

Light and reflection: using mirrors

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 ...

Image

Rainforest blanket, c1928

This is a bark blanket from the Aboriginal people of the rainforest of north-eastern Queensland. One side of the blanket is decorated with symbols painted in red and black using natural pigments. Collected about 1928, it measures 79 cm x 114 cm.