Poynting vector

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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

Discover

airplane in flight (plane, aircraft, flying)

7 Puzzling Plane Disappearances

Camel at Khor Rori, Oman; mammal.

Do Camels Store Water in Their Humps?

World Data Locator Map: Australia

Is Australia an Island?

Panoramic view at sunrise of moai, Ahu Tongariki, Easter Island (Rapa Nui), Chile

6 Lost Civilizations

Close up of periodic table, focus on nickel, copper, zinc, palladium, silver, cadmium

When Was the Periodic Table Invented?

Young boys working in a thread spinning mill in Macon, Georgia, 1909. Boys are so small they have to climb onto the spinning frame to reach and fix broken threads and put back empty bobbins. Child labor. Industrial revolution

The Rise of the Machines: Pros and Cons of the Industrial Revolution

Calendar marking march 15th

22 Questions About Time and Timekeeping Answered

Poynting vector: Related Content

Written and fact-checked by The Information Architects of Encyclopaedia Britannica

Topics

electromagnetic radiation luminescence photoelectric effect photovoltaic effect absorption pair production resonance thermal radiation Auger effect Planck’s constant Cherenkov radiation

Key People

Poynting, John Henry

John Henry Poynting

British physicist