Why can’t it exceed the speed of light (Why can’t anything exceed the speed of light?)
The speed of light is the speed limit of this universe, and the speed of any object with rest mass cannot It is possible to reach or exceed the speed of light, as Einstein’s special theory of relativity tells us. But why? The usual explanation is that the faster an object goes, the more massive it becomes, and thus the more energy it takes to accelerate. For an object to reach the speed of light, it must be accelerated by infinite energy, and there is no infinite energy in this universe, so it is impossible to reach or exceed the speed of light. Perfect!
But this explanation may still make many people unable to understand why the faster an object is, the greater its mass will be. How can the mass of an object increase? This is completely beyond the scope of our cerebral cortex, we have to use the skull to imagine. Well, an Indian buddy named Supanath came up with a more intuitive and simple experiment to explain. Do you think it makes sense?
This is a thought experiment. Imagine you and your friend standing face to face at a distance. Your friend has a gun pointed at you. There are three special bullets in his gun. One of them is below the speed of light (for example, only half the speed of light), the second is equal to the speed of light, and the third exceeds the speed of light.
Now imagine your friend shooting a bullet at you. You can see him slowly pull the trigger and the bullet comes out of the chamber. The moment the bullet is ejected from the chamber, light and shadow 1 is produced, which is side by side with the bullet; but after a short while, Light Eagle 1 will overtake the bullet, because the speed of the bullet is only half of the speed of light.
Behind bullet light 1, there will be another light 2, light 3… Since the speed of the light is twice that of the bullet, these lights will reach your eyes before the bullet hits your body, The order is light 1, light 2, light 3… let’s assume your eyes are good enough that you can see snapshots of all these lights and you’ll see bullets coming towards you from the muzzle until the last light N enters Your chest, your skin breaks.
The effect (the hit) happens after the cause (the pull of the trigger).
Now let’s assume you not only have good eyesight, but are also extremely agile. You deftly dodge before the last light n enters your body. At this point, your friend fires a second bullet—a bullet at the speed of light.
The second bullet
When the bullet exits the chamber, it emits light and shadow 1, which is side by side with the bullet; light and shadow 2 is fired after a short time . Because the speed of the bullet is also the speed of light, the light and shadow 2 and the bullet are still together; 3…until the light n, the light and the bullet are always together, and none of them reach your eyes before the bullet hits you. When all the light and shadow snapshots fall on your eyes at the same time, the bullet reaches your chest at the same time. Bullets are frozen everywhere from the muzzle to your chest. So when you see your friend pull the trigger, the bullet willWhen it hits you (even if the speed of light and the speed of the bullet become 5m/s), there seems to be no time history in between.
The cause and effect of an event occur simultaneously.
The third bullet
For some unexplainable reason, perhaps a quantum tunnel. You are not dead yet, even the speed of light bullets have not hit you. At this time, your friend’s little hand trembled, and the third bullet was ejected. Something interesting happened, just a second.
The bullet shoots out the light and shadow 1, and the bullet and the light and shadow 1 are side by side; because the speed of the bullet is faster than the speed of light, after a short time, the speed of the bullet exceeds the shadow 1, in the shadow 1, shadow 2, shadow 3 Before firing… because the bullet travels faster than the speed of light, the bullet will reach your chest before any shadows, so you will see the blood coming from your chest first. When you look up, the last snapshot of the bullet, shadow N, enters your eye, then shadow N-1… shadow 3, shadow 2, shadow 2. That is, you get shot first, and then you see the bullet exit your body, all the way to the muzzle, and your friend pulls the trigger.
The effect of an event happens before the cause!
I can’t run away now, even the quantum tunnel is useless. It is equivalent to your parents starting to fall in love and get married when you are old. So if there is really something that can reach or exceed the speed of light, the world will be chaotic and impossible to exist. By the way, don’t make friends like this in the future, or you don’t know how to die.