Light is a form of energy, but it has properties that make it different from other forms of energy. For example, light can be bent or refracted by gravity, causing it to travel at different speeds depending on its source and destination. In addition, light can travel through empty space without interacting with any matter.
However, if we look at light in a different way, we can see that it has some properties in common with matter. For example, light has mass (though only a tiny amount) and produces pressure when it moves through a material such as glass or water.
Light also interacts with matter in other ways: it can transfer momentum to an object when they collide and can even transfer energy through absorption or emission of photons between objects.
Last modified: September 12, 2022