Does data transmitted wirelessly have mass, is it visible on any spectrum? Please explaing why for either yes or no, I’m confused.
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It has no real mass because it is made of photons, same as visible light. But these photons have a much lower energy than visible light, too little energy to energize the photon absorbing pigments in your eyes. That is why you cannot see them.
Radio waves are part of the electromagnetic spectrum.
They’re “visible” by the appropriate detector since the receiver needs to “see” them in order to get the data back out.
No. Wireless transmission means electromagnetic waves such as radio wave or microwaves. Electromagnetic radiation does not have mass. I’m not sure what you mean by “is it visible on any spectrum?” Electromagnetic radiation is detectable (which I think what you mean by “visible”) with a detector that is capable of receiving signals in that spectrum. In other words, wifi uses microwaves, so any device that connects via wifi can detect microwaves.
It depends on precisely what you mean by “mass”. Relativity tells us that mass and energy are the same, so in that sense anything with energy has mass in some sense.
Usually, if you use that term, you mean *rest* or *invariant* mass, which is what corresponds to mass in classical physics and is the mass(-energy) an object would have it it were not moving. Light (and therefore radio waves) have zero *rest* mass, but have non-zero mass-energy.
Depends on the way data is transmitted wirelessly. But in general they use things that can’t be “sensed” by humans such as Infrared light or radio waves. But to put it simply is like trying to measure “invisible” light, or “inaudible” sound.