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Slippery slope you're taking there, because it means that without you observing things, things would not exist.
Your phrasing is unclear to me. I think you should say that there would be no light to detect without a substance to detect it, which is the same as saying there would be no light to detect without a substance to emit it. So of course, without anything to detect the light from the sun, it cannot be detected, but it doesn't mean it has not been emitted.
When an atom sees a photon, he doesn't take the time to ask himself if he sees another atom or if it's a photon emitted by another atom that he sees, he uses it the way he knows, which is right away, otherwise it will be too late. :0)
added- the frequency of (A) and (B) in the diagram are observable constants, the space between (A) and (B) is a variate frequency that is un-observable.
Stars are bodies that emit light, and that light comes from the collisions between their components, so if your second body has components, they might be doing the same thing. A molecule has components, so even if we do not see any light coming out of it when it doesn't absorb any, it must emit continuously the one that is producing gravitation. That's what my two atoms do when they are on constant motion at the end of the acceleration. They cannot absorb the difference in intensity of light due to the distance between them, so this light escapes from the system and can be used to produce gravitation further away.Quoteadded- the frequency of (A) and (B) in the diagram are observable constants, the space between (A) and (B) is a variate frequency that is un-observable. Any variation in frequency is observable in the form of resistance to acceleration, which we call mass.
so I can't consider that the atoms of the sun are not emitting some.
Yes, I understand white light is a mixture of frequencies.Ideas are always incomplete, so maybe the universe is incomplete too, who knows. I have an idea that says intelligence is due to our ideas being changed randomly into our brains for us to be able to cope with new things happening in our environment, the same way mutations help species to face their changing environment, so facing a new idea, I think we need to wait till our random function produces an idea that coincides with the new idea to understand it. In other words, we can't understand each other unless we are lucky, but luck increases with the number of times we try, so we need to be patient and try again until we hit the jackpot. I changed my mind about relativity lately, it took 50 years and a guy that had the idea to make a simulation of MMx with a laser pointing at the actual position of the mirror as a source.
I think what you mean is that we cannot observe a light ray unless it strikes our eye, which is true, so we have to imagine the light ray in our mind experiments, and imagination being the result of a random function, we might very well be imagining something that does not exist, which is also true. So what do we do, stop imagining things? We can't, otherwise we wouldn't be intelligent. It's our fate, until we find a better way to face what we cannot predict.
Do all things glow in the dark?
A blue car is the same frequency as the sky
Quote from: TheBoxDo all things glow in the dark?Yes, all objects at room temperature glow with infra-red radiation.- Objects with a temperature around 5000 degrees glow with visible light. The Sun is an example.- In fact, any object above absolute zero glows with light, although when the temperature is close to absolute zero, the main radiation is in the microwave part of the spectrum. The CMBR is an example.QuoteA blue car is the same frequency as the skyI guess you could design a paint with the same color as the midday blue sky, and then paint a car with it.But there is no point in doing it, because the human eye cannot distinguish between an infinite number of colors that all look equally blue (in theory).This week I visited a laser IMAX theater. They manage to produce what looks like thousands or millions of colors on the screen by only using 3 laser colors (per eye - it was a 3D movie).Quoteblue skyWhy do you say the sky is blue?If you get up early in the morning, you could say "the sky is red or orange"; if you get up at night, you could say "the sky is black". It's the same sky.You should say that on a clear day (no clouds), the air is fairly colorless. But dust in the atmosphere scatters red light a little bit, but scatters blue light a lot. So:- red and orange make it through a thicker layer of atmosphere at dawn and sunset, while most blue light has been scattered away before it reaches you, making the sky look red and orange- even the shorter path through the atmosphere at midday is enough to scatter a lot of blue light at large angles to the Sun, making the noon sky more blue. (The red and orange are still present, but they are in a direct line towards the Sun, so they are hard to see.) - On a cloudy day at midday, the sky is white. This is because the red, green and blue colors are equally scattered by the tiny droplets of water in the cloud. Mix them together, and you would have to say that the sky is colorless.
Rayleigh scattering refers to the scattering of light off of the molecules of the air, and can be extended to scattering from particles up to about a tenth of the wavelength of the light. It is Rayleigh scattering off the molecules of the air which gives us the blue sky.
Yes, all objects at room temperature glow with infra-red radiation.