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wonofdaweefolk
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i'm wondering something... does light have any mass?
The answer to this question is no. According to the theory of relativity, light does not have mass because it does not have a rest mass. This means that light does not have mass when it is at rest, unlike other particles such as protons and electrons.
Although light does not have mass, it does have energy. This is because mass and energy are two different properties and can be converted into each other. In the case of light, it has energy in the form of photons, which are packets of energy that travel at the speed of light.
Light interacts with matter through the electromagnetic force. This force is the reason why light can be absorbed, reflected, and refracted by matter. The electromagnetic force is also responsible for the "push" or pressure that light exerts on matter, which is why we can feel the warmth of sunlight or the force of a laser pointer.
Yes, light can be affected by gravity even though it has no mass. This is because according to Einstein's theory of general relativity, gravity is not a force between masses, but rather a curvature of space and time caused by the presence of mass and energy. Since light has energy, it can be affected by the curvature of space-time.
Currently, there is no evidence to suggest that light can have mass. However, some theories, such as string theory, propose that photons might have a tiny amount of mass. This is still a topic of ongoing research and has not been proven yet. So, at this point, it is not possible to say for certain if light can have mass in the future.