Timeline for Is there a way to calculate frequency of visible white light?
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| May 21, 2020 at 14:39 | comment | added | M. Enns | It still sounds like you are trying to compare apples and oranges. Let's do a rough calculation. Say you had a 60 W incandescent bulb ~5% efficient so 3 W of light energy. Let's pick yellow light in the middle of the visible spectrum so f=5x10^14 Hz. The energy of one photon is given by E=hf = 6.6x10^-34 x 5x10^14 = 3.3x10^-19 J. Dividing 3 J/s by the energy per photon gives 9x10^18 photons per second. So this number is more than the frequency of a single UV photon but it all depended on what power of bulb we decided to start with. | |
| May 21, 2020 at 13:03 | comment | added | PDD | OK. Thank you for your answer. Can I say that bright light source had frequency more than ultraviolet light (per second) because of cumulative frequency overlay? (exclude even all non visible spectrum from which is white light too) | |
| May 19, 2020 at 16:04 | history | answered | M. Enns | CC BY-SA 4.0 |