Can a shadow be faster than the light?
Let’s think about colours, in particular, think about white and black. They are not colours because white is created by all the colours together and black is the lack of colours (or the lack of light). So black is not a color, but it’s something that exists. Somebody could say:
“black is an abstract concept, an arbitrary definition for something that we need to call in some way”
but also this definition fits with the future reasoning. Now, like for black, let’s consider the lack of light a thing (in some way lack of light’s and black’s definitions coincide). So imagine pointing a laser beam on the moon’s surface.
If you put a finger in front of the laser pointer, and gradually cover it, the speed of disappearance of the light on the moon surface will be the same as your finger. Probably, for this example, the coverage of the pointer’s speed has to be very high in order to make the speed of disappearance of the light on the moon surface higher than light’s speed. But consider a greater distance, for example Earth-Saturn. So imagine you are focussing the laser beam on Saturn, which is powerful enough to cover its entire diameter. Now, if you cast a shadow on Saturn with a finger, the shadow moves at the speed of the finger, which could even be a millisecond. But light takes minimum 0.38 seconds to travel the entire diameter of Saturn, since it can travel only 299,792 kilometres per second. In conclusion, it’s obvious that:
darkness is faster than the light.
This conclusion seems to violate the laws of physics, but it doesn’t. Einstein said:
“no physical object (like photons) can travel faster than the light”
and this is in agreement with our theory because darkness is not a physical object, nor composed by physical objects.
Think about how the world will change if, one day, humans will be able to use darkness’s speed for carrying physical objects.
Thank you for the attention.
