Recent content by Serge58

And i did understand that for a wave to propagate a medium is required. And i understand too that the speed of a wave is irrelevant to its frequency but it is relevant to the density of the medium that propagates it. To me it sounds like the medium limits its speed. That is why i am asking if...

A few questions for anyone kind enough to reply and help me understanding this matter: 1. Since electromagnetic waves in vacuum have a maximum speed is this speed limited by the permittivity and permeability of the vacuum? 2. Or is it related to the density of the vacuum as it is for waves...

I think i didn't write my question properly. I'll try again on a new tread.

After an analogy with air and water waves, which are limited in speed by the density of the medium in which they travel, I was wondering if there were variations in the "density" of the vacuum of space which might cause light, or any electromagnetic waves for this matter, to vary in speed...

Very nice quote from Einstein. I will start a new topic since this discussion is too far way from the original subject. Thanks

Thanks. I will check the quantum forum for my queries on photons. I'll have a lot of reading to do. :-) In the mean time, since the speed of sound in air varies with its density, it is the same for light in vacuum? Are there any variations of densities in the fabric of space? Perhaps...

I've got it. :-) No air, no water = no waves. No fabric of space = no wave. So it can't fill the gaps. Now what about the photon? Is it created when a wave touches matter? or does he travel as well?

I meant light that isn't limited by the permittivity of the vacuum.

Thanks for your time and replies by the way. It is much appreciated. Yes i understand the basics behind water waves, sound waves and even electromagnetic waves. However, even if it is obvious that a force need to be applied to create a sound or a water wave, it doesn't seems that obvious...

Can someone help me with this one? The way I see that is that water is not pushed.. (and you might say it moves, I don't know) it looks like it is pulled, sucked, and it is spreading, diffusing, filling the gaps though the fabrics. It doesn't look like there is a force pushing it per se...

Nice article but I don't get the relation with light being stuck at a certain speed due to permittivity and permeability.

So i can suppose that if light doesn't travel faster, it is not because it won't, but because it can't. It is possible to assume that light would go faster if it wasn't of the permittivity of vacuum?

I wish to reformulate my question. Why is there a maximum speed of light in vacuum? is it because it won't go faster or because it can't?

Fill a bowl with water, lay a piece of fabrics over the bowl, one end touching the water and the other end laying down on the table. Due to the capillarity effect the water will follow the fabrics and after a while it will be all wet. From this little experiment we can deduce that water...