Timeline for The energy of an electromagnetic wave
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 7, 2012 at 8:14 | comment | added | tmac | A variety of technologies allow for tunable lasers: en.wikipedia.org/wiki/Tunable_laser | |
| May 7, 2012 at 7:04 | vote | accept | johann | ||
| May 5, 2012 at 11:44 | history | edited | kleingordon | CC BY-SA 3.0 |
added 5 characters in body
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| May 5, 2012 at 11:40 | comment | added | kleingordon | You're right, I'll edit the answer to replace "laser" with "light source." I was thinking about this like the thought experiment you do for the photo-electric effect. You imagine you have some frequency and amplitude knobs you can turn for some light source. | |
| May 5, 2012 at 11:34 | comment | added | Luboš Motl | Good point, anna, +1. This was actually the first thing one should have said - and I should have, too. | |
| May 5, 2012 at 11:34 | comment | added | anna v | please note that lasers have practically one frequency. en.wikipedia.org/wiki/File:Helium_neon_laser_spectrum.svg A different lazing medium is necessary for a different frequency so one cannot lower the frequency while increasing the amplitude of a laser. | |
| May 5, 2012 at 11:21 | history | answered | kleingordon | CC BY-SA 3.0 |
