Light waves

Pocket Genius Science: Energy and forces – Light

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Facts At Your Fingertips: Energy and forces – Light Light is the only form of electromagnetic radiation we can see. Most things absorb and reflect light, but few objects give out light. The Sun is the main source of light in the day, while electric lights provide illumination at night. Making shadows Some materials, such … Read more

Pocket Genius Science: Energy and forces – The EM spectrum

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Facts At Your Fingertips: Energy and forces – The EM spectrum Electromagnetic (EM) radiation is a form of energy that travels in waves at a speed of 186,000 miles (300,000 km) per second, which is the fastest speed in the universe. Different kinds of radiation make up the EM spectrum. All types of radiation except … Read more