Suppose a giant is infinite, wouldn t he be faster than the speed of light with a wave of his hand?

Impossible, because there can be no infinite giants, in fact, even the existence of dinosaurs is already incredible, because if a person is enlarged, his mass should be increased by the third dimension, and the strength is only an increase in the quadratic, the greater the magnification, the greater the gap, for example, ants can lift weights so many times beyond their own mass, fleas can jump to a height so many times beyond their own height, but if they are enlarged, they don't need to be big, just magnified to the size of a person, Then they can't even move, because the power of their growth cannot cope with the quality of their own growth, and that's the truth, let alone the infinite giant.

Come on, when a life is as big as the sun, it can travel through the sun in 1 second, it feels like it is faster than the speed of light, but if you look at it on the earth, you will find that it moves slowly, it feels like slow motion in the movie, you will see that it still takes seconds to cross the sun, this is the principle of the invariance of the speed of light, but the life form itself does not feel it, on the contrary it feels that our time is faster, because it has only taken a step and found that the time of our earth has passed the second. You can be a little more bold and imagine that if there was a life form the size of the Milky Way, then it would wave its arms, maybe we have been on Earth for tens of thousands of years. But on Earth, this arm wave took tens of thousands of years.

At present, there are only two recognized faster-than-light events: one is that the expansion speed of the universe can exceed the speed of light, and the farther away it is, the faster it expands; The second is that the speed of quantum entanglement is faster than the speed of light, and this phenomenon also exists, so it can be said that the speed of quantum entanglement is instantaneous beyond distance.

Some people may say that Einstein did not allow the existence of faster than the speed of light, but in fact Einstein had a better explanation for the speed of light: objects with rest mass are not allowed to reach the speed of light, and theoretically can only be infinitely close to the speed of light; Information cannot be transmitted faster than the speed of light. It just so happens that one of the two faster-than-light speeds mentioned above expands space, and the other faster-than-light does not transmit information, and quantum communication is mainly to ensure the security of information, not to really use quantum entanglement for communication.

Returning to the topic, if there is a huge creature that can cover a distance between the sun and the earth in one step, which is an astronomical unit (100 million kilometers), then does this achieve superluminal speed? Let's leave aside how this giant came into being, let's just say that it has taken this step. First of all, you need two conditions to find the speed:

Time + distance, and the distance taken by this step is 100 million kilometers, so where is the time? There is no way to say before, objects with stationary masses cannot reach the speed of light, so the giant's step can theoretically be infinitely close to the speed of light, so it will take at least 8 minutes and 20 seconds to take this step. Because this time is the time it takes for photons to travel from the surface of the sun to the surface of the earth.

If such a giant does exist, then it will be a particularly sluggish person, because the fastest speed of signal travel in its body can only be the speed of light, and its brain sends signals to its legs, hoping to take a step, only to wait until twenty minutes later to move, which will be very difficult.