Timeline for Amplitude of light waves
Current License: CC BY-SA 3.0
10 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 21, 2016 at 18:35 | vote | accept | Jyotishraj Thoudam | ||
| Oct 21, 2016 at 5:15 | answer | added | flippiefanus | timeline score: 1 | |
| Oct 19, 2016 at 18:23 | answer | added | HolgerFiedler | timeline score: -1 | |
| Oct 19, 2016 at 10:47 | answer | added | Farcher | timeline score: 0 | |
| Oct 19, 2016 at 10:09 | comment | added | Jyotishraj Thoudam | So, how far we have to be so that the Amplitude vanishes completely and we are not able to see the wave? | |
| Oct 19, 2016 at 9:59 | comment | added | counter | Now the stars you are seeing in the sky are like the sun but mostly bigger. Have you ever tried looking directly at the sun? (Don't do it!) The sun is extremely bright - so are these stars, but due to the distance you can look at them without going blind. | |
| Oct 19, 2016 at 9:58 | comment | added | Jyotishraj Thoudam | I was wondering if they decrease their Amplitude with distance, then when we look up at the sky and see a star we say that we are seeing light from the past because it has reached here after a long time. So, for that particular wave it has not been completely vanished because we are able to see. So, I was wondering if the Amplitude had not decreased with distance | |
| Oct 19, 2016 at 9:55 | comment | added | counter | ad 1: The amplitude of light which you are talking about is the Intensity, which does decrease with increasing distance ad 2: The electromagnetic wave in simple words is a periodic conversion from electric to magnetic energy and vice versa | |
| Oct 19, 2016 at 9:39 | comment | added | Frédéric Grosshans | I can’t answer 1., because the amplitude of electromagnetic waves indeed decreases when they they spread away form the source. Otherwise, far away light sources would be as bright as nearby sources! I don’t get why, for you “he Amplitude doesn't seem to decrease when it travels in vacuum” | |
| Oct 19, 2016 at 9:17 | history | asked | Jyotishraj Thoudam | CC BY-SA 3.0 |