this post was submitted on 12 Sep 2023
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I'm about 62% sure this is a joke...
Please help, I'm clueless about this kind of stuff.
It's the same principle of al satellite dish and it works, but I'm 86% sure that mirrors won't affect wifi, so we're still not at 100% but getting there.
Depends on what frequency your "mirror" mirrors.
A traditional one reflects higher frequency of electromagnetic rays (visible light) than what you need for wifi (in the microwave frequencies)
If it's a silver layer on a glass/plastic pane (like basically any mirror) and it's big enough (more than idk, let's say 20 cm to be safe) why wouldn't it mirror the lower frequencies too?
Not enough interaction with the waves.
I'm not fully versed on all the physics of it, but to my understanding, the layer of silver that makes up the reflective surface of a mirror is crazy thin, like, less than the thickness of paint.
The basic concept I was explained is that the longer the wavelength (lower frequency) the easier it is for it to penetrate obstacles, specifically things that are relatively opaque to radio waves. The very high frequency (small wavelength) waves of light, are so small that almost everything interacts with them; so when they make it to the silver layer, despite that silver layer being impossibly thin, the >100THz waves, will bounce. When dealing with stuff that's much lower frequency (like 2GHz to 5Ghz, many orders of magnitude lower frequency), there's not enough of the material to interact with the wave to have any significant effect on its propagation, so it passes right through.
This is a good observation and a great question. I'm sorry I couldn't be more specific, I'm just not as well versed in the physics of it all to really get into the details; but I hope this helps.