Interactions between light and matter have observable effects from "summary" of Physics 11 by British Columbia. Schools Department. Curriculum Development Branch
Light is a form of electromagnetic radiation that interacts with matter in various ways. When light encounters matter, it can be absorbed, transmitted, or reflected. These interactions between light and matter result in observable effects that can be studied and understood through the principles of physics. One of the most common observable effects of the interaction between light and matter is the phenomenon of reflection. When light strikes a surface, it can bounce off in a different direction. This reflection of light is what allows us to see objects around us, as our eyes receive the reflected light and our brains interpret it as an image. Another observable effect of the interaction between light and matter is the phenomenon of absorption. When light is absorbed by matter, it can cause the atoms or molecules in the material to become excited. This excitation can result in the emission of light at a different wavelength, which we perceive as color. For example, when white light strikes a red apple, the apple absorbs all the colors of light except for red, which is reflected and gives the apple its red color. In addition to reflection and absorption, light can also be transmitted through certain materials. When light passes through a material, it can be refracted or bent, depending on the properties of the material. This bending of light is what causes objects to appear distorted when viewed through water or glass.- The interactions between light and matter have a wide range of observable effects that can be studied and understood through the principles of physics. By examining how light behaves when it encounters different types of matter, scientists and researchers can gain valuable insights into the nature of light and the properties of matter.
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