2 ms·
Exactly my point, we can easily block the light from the sun (roughly 1400W/m2) but we can't easily block the TV/radio (50dB) from the neighbor living above :-)
by NKosmatos 2y ago
Exactly my point, we can easily block the light from the sun (roughly 1400W/m2) but we can't easily block the TV/radio (50dB) from the neighbor living above :-)
In my mind I've got this "silly" analogy that noise is like the strong electromagnetic force, very powerful but only in relatively short distances ;-)
- RogerL 2y agoThe tiniest amount of vacuum stops sound as abruptly as non transparent matter stops light. furthermore, there was no amount of sound which can overcome the vacuum, whereas enough photons at enough energy will destroy the matter in its path. edit: yes, an explosion will expel matter through a vacuum, so in some sense enough noise will travel through a vacuum, but you are probably not going to be complaining about the "noise" if you are showered with enough matter to hear it from a massive explosion as your sudden disassembly will (briefly) capture your full attention. Whereas light trivially crosses the universe, as well as through some matter.