 | Photon | Dec 10, 2006 |
Photon , the particle composing light and other forms of electromagnetic radiation , sometimes called light quantum. The photon has no charge and no mass. About the beginning of the 20th cent., the classical theory that light is emitted and absorbed by matter in a continuous stream came under criticism because it led to incorrect predictions about several effects, notably the radiation of light by incandescent bodies and the photoelectric effect . These effects can be explained only by assuming that the energy is transferred in discrete packets, or photons, the energy of each photon being equal to the frequency of the light multiplied by Planck's constant, h. Because the value of Planck's constant is extremely small (6.62 × 10 -27 erg sec.), the discrete nature of light energy is not evident in most optical phenomena. The light imparts energy and momentum to a charged particle when one of the photons collides with it, as is demonstrated by the Compton effect. (From: The Columbia Encyclopedia, Sixth Edition | Date: 2007 )   | Photos | Nov 22, 2009 |
Beijing 2009 69 Photos, 7 comments
Kuala Lumpur 54 Photos, 5 comments
Sunrise to Sunset 25 Photos, 6 comments
Swim Finals 84 Photos, 2 comments
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  | Guestbook | |
 | hi sir ricky, musta na? san ka na ngaun nagwowork? |
 | thanks, rickytick! how are you?! :) |
 | great wholly cow photos, ricky! thanks for documenting the moooooomentous event. next time you're hired again, okay? |
 | Belated Happy Birthday, Sir! See you around the office :) |
 | Happy birthday fellow Virgo! :-D |
 | happy birthday uncle! :) God bless :) |
 | Hi Tito Ricky!!! Its Mico....plz accept my invitation P.S. I invited you using your destop computer. hehehehe |
 | i miss you... hope you're doing okay there in florida... |
 | musta na ricky! medyo lumulusog tayo a :-) |
 | Dude, your photos are so small. |
 | so, where are the photos? |
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