1001 Space Earth Nature History Human World Science and Technology Chemistry Materials Force and Energy Heat and Light Electricity and Magnetism Industry Machines Electronics and Computers Cars and Trucks Railways Ships Aircraft Fishing and Agriculture Undersea Exploration

Choose a Page:What happens when colours are mixed?*How does the Sun produce light?*What is light?How does a vacuum flask work?What is heat?What is colour?How does heat travel?What is temperature?How do thermometers work?What is the coldest possible tempe...How fast does light travel?How do our eyes detect light?How do glasses work? How does the Sun produce light? The Sun produces light by a nuclear reaction called fusion. As atoms of hydrogen combine to form helium, they produce vast amounts of heat and light. Sunlight appears white, but it contains a mixture of all the colours of the rainbow: red, orange, yellow, green, blue, indigo, and violet. The central core of the sun, where heat and light are produced, has a temperature of 15 million degrees.   Previous: Back Book: 1001 Section: Science and Technology Chapter: Heat and Light