wavelength

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graphic representations of a sound wave

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Highway Night Traffic Portland, drive, driving, car, automobile.

What's the Difference Between Speed and Velocity?

$Light refraction image with a cube. Prism$

How Is Light Both a Particle and a Wave?

Above the clouds 130 nautical miles below, astronaut Mark C. Lee floats freely without tethers as he tests the new Simplified Aid for Extravehicular Activity (EVA) Spacewalk Rescue (SAFER) system, Sept. 16, 1994. Space Shuttle Discovery, STS-64

Gravity: From Apples to the Universe

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Queen Elizabeth II addresses at opening of Parliament. (Date unknown on photo, but may be 1958, the first time the opening of Parliament was filmed.)

All 119 References in “We Didn’t Start the Fire,” Explained

Black widow spider

9 of the World’s Deadliest Spiders

Flag of Bhutan

6 Small Kingdoms of the World

Martin Luther King, Jr.

Why We Celebrate MLK Day

Demystified - Do Lemmings Really Commit Mass Suicide? illustration

Do Lemmings Really Commit Mass Suicide?

An ancient egyptian hieroglyphic painted carving showing the falcon headed god Horus seated on a throne and holding a golden fly whisk. Before him are the Pharoah Seti and the goddess Isis. Interior wall of the temple to Osiris at Abydos, Egypt.

11 Egyptian Gods and Goddesses

Adolf Hitler (Nazi, nazism, German leader).

9 Things You Might Not Know About Adolf Hitler

wavelength: Related Content

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Photos

$refraction of light by a prism$

graphic representations of a sound wave

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Topics

Compton wavelength wavemeter interferometer wave radiation wave motion vibration phase absorption interference frequency scattering wavenumber period

Key People

Karl Manne Georg Siegbahn

Swedish physicist

Quiz

27 True-or-False Questions from Britannica’s Most Difficult Science Quizzes