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The basic unit (quantum) of electromagnetic radiation (and therefore light), photons were first postulated by Planck, whose measurements of the blackbody spectrum showed that electromagnetic radiation... More »



A photon is an elementary particle, the quantum of light and all other forms of electromagnetic radiation. It is the force carrier for the electromagnetic force, even  ...

What is a Photon? - Physics of Light - Quatr.us


Photons are tiny little particles of light, far too small to see individually. All light is made of photons (FOE-tahns). The earliest photons probably appeared about ...

What are Photons - Universe Today


Sep 19, 2010 ... To put it simply photons are the fundamental particle of light. They have a unique property in that they are both a particle and a wave. This is ...

Answer: Under the photon theory of light, a photon is a discrete bundle (or quantum) of electromagnetic (or light) energy. Photons act as both a wave and a particle all the time (even though it's common, but basically incorrect, to say that it's "sometimes a wave and ... More »
By Andrew Zimmerman Jones, About.com Guide

What is a Photon? - Definition, Energy & Wavelength - Video ...


May 18, 2015 ... In this lesson, we will learn the definition of a photon. We will also explain Planck's constant and its relationship to the photon energy and...

What is the mass of a photon? - Ucr


Photons are traditionally said to be massless. This is a figure of speech that physicists use to describe something about how a photon's particle-like properties ...

What is photon? - Definition from WhatIs.com


What is a photon? This definition explains what a photon is and the history of its discovery, as well as how photons are understood in physics and the ...

The Basics of Light


In many instances, it is convenient to represent light as a "particle" phenomenon, thinking of light as discrete "packets" of energy that we call photons. Now in this ...

What is the lifetime of a photon? - Physics World


Popular Q&A
Q: What is a photon?
A: A photon is a discrete bundle (or quantum) of electromagnetic (or light) energy. It has no mass! Text kgb again soon! Read More »
Source: www.kgbanswers.com
Q: What is a photon?
A: A "photon" is a quantum of electromagnetic radiation. A "quantum" is the smallest quantity of radiant energy. Word limits etc. A "photon" is a quantum of electr... Read More »
Source: www.chacha.com
Q: What is a Photon?
A: Under the photon theory of light, a. photon. is a discrete bundle (or. quantum. of electromagnetic (or light) energy. Photons are always in motion and, in a vac... Read More »
Source: physics.about.com
Q: What is a photon?
A: it is neither wave nor particle. it is a quantum mechanical object it just happens to have properties which seem to make it act like a classical particle or a w... Read More »
Source: uk.answers.yahoo.com
Q: What is a photon?
A: The basic unit of light, including other forms of electromagnetic radiation, and a part of the electromagnetic field. Source(s): Chemistry book Read More »
Source: answers.yahoo.com