Recent content by RomanL

Hmm, that's interesting. Yet, I still feel that I am missing something. For example, the scientists keep on searching for the Higgs Boson/graviton (I am not sure if they are the same particle or not) that is supposed to be a force carrier for the gravitational force. If it is just a mathematical...

I have long been mystified by how particles act as force carriers. Apparently, the exchange of force-carrier particles (or virtual particles?) causes force action. OK, but how does this work? 1) Some forces cause attraction and some repulsion (and others decay). How can an exchange of the...

Wow, this was an amazing discussion guys - thanks a lot! I have learned that it is much more complicated and much more exciting than I initially assumed. So there is a thermal limit that is similar to the human threshold of hearing (cca. 0 to -10 dB), but narrow band receivers could do much...

Very interesting - so Brownian motion of the eardrum produces noise somewhere in the vicinity of - 10 dB (supposedly the approximate detectable sound in some young children at the point of peak frequency sensitivity)? Hmm, but surely they have to 'hear' the sound to be able to do that. They...

This is a really interesting discussion. So it seems, Brownian motion is not really as limiting at the lower end of the sound amplitude scale as I thought it would be... That's unexpected, but certainly exciting. At the very least, assuming space is quantized, there is a limit on molecule...

Hmm, that does make a lot of sense. If you cut out the noise by having a very narrow bandwidth, I guess the noise does not matter as a limit. Well, thanks, that does give me something to ponder.

OK, so the random Brownian motion of particles is probably where the lower limit of sound probably lies. Fair enough - does anybody know what that would be converted to decibels and how low did we manage to get as far as measurement goes with our instrumentation?

Apparently, there is a limit to the maximum sound amplitude that depends on the medium in which the sound in question travels. In the atmosphere, the limit is supposedly around 194 Db, arising from the fact that in sound above this level, the pressure throughs would exceed atmospheric pressure...