Hi everybody! So last night my grandpa and I were talking about science. We were talking about the fact that sense light can only travel so fast and sense there's such a massive distance between earth and the sun that when you look at the sun your actually looking at how it was 7 minutes ago because it takes the light 7 minutes to get to earth. He also told me about how there is a spaceshuttle that can look so far away that they can actauly almost see the begining of time because the light from it is just now getting to that point. So I came up with an idea. So let's say you could somehow move faster than the speed if light. Let's say you started at the point were the beginimg of time was and you started moving away at after than the speed of light. If you caught up to the light from the biging of time could you see the the past (or at least the light from the past)? And sence it would be light could you make a shadow in it? Thus making a shadow in time?
I thinik that you could do that since you are getting there before that light has already moved on. But it wouldn't be a shadow in time for you, just for the people far away from where that light source used to be.
If time is showing us the universe, then technically we're looking backwards in time because the light reflecting off it to make an image or even electromagnetic radiation would take time to reach us so we're seeing backwards in time. Therefore If you were to travel faster than light it would reach our eyes, but it would still disappear instantaneously, so no, you could not.
But what if he stood there for a long time? Or floated there for a long time cause of instantly being forzen and lack of oxygen.
Then it wouldn't be a shadow in time, it'd be a normals shadow caused by him staying there. That's just a normal shadow. Technically people wouldn't see it instantaneously, but the shadow would be huge because of the distance.
How would it not be a shadow in time? The shadow in time is referring to having it so that when the people get the shadow, it would be mixed in with the light from the past if i'm correct in understanding.
Time is a human concept. Nevertheless, a satellite with a good enough resolution/magnifying could, if it would float at the right spot, see the light that was emitted from our planet far far ago, thus for example witnessing the antique, or even the paleozoikum etc, from above. If there are no interferences from other planets or stars, that is.
@wdojhpodfjd: O I see what your saying I didn't even think of that... so technically every shadow is in time...durp! Haha so I guess the correct way to phrase that question would be as follows? Could you make a shadow in the light from the beginning of time?
He also told me about how there is a spaceshuttle that can look so far away that they can actauly almost see the begining of time
to bad that no1 knows where(in what direction) the middle of the univers is and so we wont be able to know where it started =) let alone observing it. (maybe we can observe it by accident, but not for a longer time.)
also is the speed of light the max speed in the univers (untill proven different when the experiment in swiss/italy is redone by a other group scientists and come out whit the same conclusions.)(can't rememeber right now what it was called)
I say yes, but I agree with mind...overload. Ouch. Anyways, you could because the shadow would have to catch up to you, and I guess shadows are some form of light....but the opposite of light, but not in speed. This is very hard to explain...but I say yes.
Therefore the topic question is impossible unless you break the laws of physics. Only then could it happen. It's like asking "if protons held negative charges..."
Therefore the topic question is impossible unless you break the laws of physics. Only then could it happen. It's like asking "if protons held negative charges..."
There's a much simpler way to make a sort of time shadow. Let's say you have your car parked outside on a sunny day. Later on, you get in your car and drive it away from the spot it was in. Your car's light shadow has created a slightly cooler spot where it was, and this shadow can be detected for up to an hour afterwards using high-resolution thermal imaging cameras. This effect is best implemented with spy satellites and is often used by intelligence agencies to obtain data on the movements of targets or even the silhouettes of new aircraft designs that had been moved into their hangars before the satellite arrived overhead. Since this heat shadow is detectable in the future when the object that created it is no longer present, the heat shadow therefore is also a type of time shadow.
Then there's really nothing to discuss. The statement is unfalsifiable, because it can't happen. It's like discussing "if the moon was made of cheese..." or "if space was jell-o instead of a vacuum..."
