Ashkin, Arthur Retired, Bell Laboratories, Lucent Technologies, Holmdel, New Jersey. Nobelist.
Last reviewed:January 2020
- Particle guidance and trapping
- Atom traps
- Overcoming the Doppler limit
- Biological applications
- Bose-Einstein condensation
- Related Primary Literature
- Additional Reading
The force on an object exposed to electromagnetic radiation. It has been known since the days of J. C. Maxwell in the nineteenth century that electromagnetic radiation (which includes visible light) carries both energy and momentum. If radiation impinges on a material body and becomes absorbed, the energy gives rise to heat and is readily detectable. When radiation interacts with an object and is absorbed or scattered, there is also a change in the momentum of the light. By conservation of momentum, this gives rise to a force on the object. This is called radiation pressure. The magnitude of this momentum for visible light is quite small and is difficult to detect. Only near or inside stars, where the intensity is enormous, do light forces have large effects. See also: Electromagnetic radiation; Light; Maxwell's equations; Poynting's vector
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 10,000 highly qualified scientists and 46 Nobel Prize winners.
MORE THAN 8700 articles covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information