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Dec 7, 2022 · Waves of Light. Light has the properties of waves. Like ocean waves, light waves have crests and troughs. The distance between one crest and the next, which is the same as the distance between one trough and the next, is called the wavelength.
Nov 14, 2024 · Light is electromagnetic radiation that can be detected by the human eye. Electromagnetic radiation occurs over an extremely wide range of wavelengths, from gamma rays with wavelengths less than about 1 × 10 −11 metres to radio waves measured in metres.
Light has seven main properties. 1. Light is electromagnetic radiation that can be perceived by the eye. Other electromagnetic radiation, such as x-rays or infrared rays, are not detected by our eyes.
Examples of light include radio and infrared waves, visible light, ultraviolet radiation, and X-rays. Interestingly, not all light phenomena can be explained by Maxwell’s theory. Experiments performed early in the twentieth century showed that light has corpuscular, or particle-like, properties.
Summary notes, revision videos and past exam questions by topic for CAIE IGCSE Physics Topic 3 - Properties of Waves including Light and Sound.
Basic Properties of Light. Light radiation travels at a speed of approximately 299 792 458 metres per second (m/s) in a vacuum (a container with no air). This is referred to as the speed of light. The speed of light is the same for all electromagnetic waves.
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Apr 10, 2022 · The visible light and other radiation we receive from the stars and planets is generated by processes at the atomic level—by changes in the way the parts of an atom interact and move. Thus, to appreciate how light is generated, we must explore how atoms work.
