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1. astro101.wwu.edu › a101_lightwavesAstroPages | Light Waves | Western Washington University

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   They discovered that light from any source, whether a candle or a star, is composed of a combination of wavelengths depending on what atoms and molecules are emitting the light. This science (spectroscopy) allows astronomers to determine what elements must be present on the surface of a given star.

2. www.bbc.co.uk › bitesize › articlesLight Waves - BBC Bitesize

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   It travels as a transverse wave. Unlike a sound waves, light waves do not need a medium to pass through, they can travel through a vacuum. Light from the Sun reaches Earth through the vacuum of...

3. www.sciencefocus.com › science › what-is-lightWhat is light? A guide to waves, particles, colour and more

   www.sciencefocus.com › science › what-is-light

   Is light a wave or a particle? How is it created? And why can’t humans see the whole spectrum of light? All your questions answered.

4. phys.libretexts.org › Courses › University_of2.1: Light as a Wave - Physics LibreTexts

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   May 24, 2024 · We know that light is a wave based on how it behaves – it exhibits the same properties of other waves we have examined – it interferes with itself, it follows an inverse-square law for intensity (brightness), and so on.

5. kids.britannica.com › kids › articlelight - Kids | Britannica Kids | Homework Help

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   Light exists in two very different forms at the same time. One form is tiny particles called photons. The other form is waves. The easiest way to think about light is as waves. Light waves travel through space at a speed of about 186,282 miles per second (299,792 kilometers per second). Scientists use an idea called wavelength to describe light ...

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6. www.sciencing.com › light-physics-what-is-it-howLight (Physics): What Is It & How Does It Work? - Sciencing

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   Dec 28, 2020 · In plain terms, electromagnetic waves are simply known as light, though the term light is sometimes used to specify visible light (that which can be detected by the eye), and other times is used more generally to refer to all forms of electromagnetic radiation.

7. People also ask

   Why is light called electromagnetic radiation?

   • Light is called electromagnetic radiation because each wave has an electric part and a magnetic part. Our brains interpret light waves by assigning different colors to the different wavelengths, but much of the light in the Universe travels with wavelengths too short or too long for the human eye to detect.

   AstroPages | Light Waves | Western Washington University

   astro101.wwu.edu/a101_lightwaves.html

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   How do scientists describe light waves?

   • Scientists use an idea called wavelength to describe light waves. Like waves moving across a pool of water, light waves have peaks and valleys. The distance between two of these peaks is called a wavelength. Sunlight contains light waves with long, medium, and short wavelengths.

   light - Kids | Britannica Kids | Homework Help

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   What does radiation mean in physics?

   • Radiation, as used in this book, is a general term for waves (including light waves) that radiate outward from a source. As we saw in Orbits and Gravity, Newton’s theory of gravity accounts for the motions of planets as well as objects on Earth.

   5.1: The Behavior of Light - Physics LibreTexts

   phys.libretexts.org/Bookshelves/Astronomy__Cosmology/Astronomy_1e_(OpenStax)/05:_Radiation_and_Spectra/5.01:_The_Behavior_of_Light

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   Is light a wave?

   • Most of us were taught at school that light is a wave. This is because it does things that waves do. So, for example, waves undergo interference. To understand this, imagine that you’ve just dropped two stones in a still pond. Each of those stones will create ripples, with the water creating waves that move up and down.

   What is light? A guide to waves, particles, colour and more

   www.sciencefocus.com/science/what-is-light

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   How fast do light waves travel through space?

   • Light waves travel through space at a speed of about 186,282 miles per second (299,792 kilometers per second). Scientists use an idea called wavelength to describe light waves. Like waves moving across a pool of water, light waves have peaks and valleys. The distance between two of these peaks is called a wavelength.

   light - Kids | Britannica Kids | Homework Help

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   Which color of light has the shortest wavelength?

   • Violet light has the shortest wavelength. Orange, yellow, green, blue, and indigo have wavelengths in between those of red and violet. When light waves of all the colors travel together, the light looks white. Certain objects, such as triangular pieces of glass called prisms, can separate white light into the individual colors.

   light - Kids | Britannica Kids | Homework Help

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8. phys.libretexts.org › Bookshelves › Astronomy5.1: The Behavior of Light - Physics ... - Physics LibreTexts

   phys.libretexts.org › Bookshelves › Astronomy

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   Apr 10, 2022 · Describe the relationship between wavelength, frequency, and speed of light. Discuss the particle model of light and the definition of photon. Explain how and why the amount of light we see from an object depends upon its distance.