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When a light wave with a single frequency strikes an object, a number of things could happen. The light wave could be absorbed by the object, in which case its energy is converted to heat. The light wave could be reflected by the object. And the light wave could be transmitted by the object. Rarely however does just a single frequency of light ...
Jul 7, 2021 · Interactions between Light and Matter. As you may have gathered, light and matter are intricately linked. Matter gives off light. Every object emits, or gives off, light of one sort or another simply because of its temperature. Glowing objects like stars, galaxies, light bulbs, and lava are all sources of visible light.
- Reflection. Reflection is when incident light (incoming light) hits an object and bounces off. Very smooth surfaces such as mirrors reflect almost all incident light.
- Absorption. Absorption occurs when photons from incident light hit atoms and molecules and cause them to vibrate. The more an object's molecules move and vibrate, the hotter it becomes.
- Diffraction. Diffraction is the bending and spreading of waves around an obstacle. It is most pronounced when a light wave strikes an object with a size comparable to its own wavelength.
- Scatter. Scattering occurs when light bounces off an object in a variety of directions. The amount of scattering that takes place depends on the wavelength of the light and the size and structure of the object.
How do we see Colors? The colour of the objects that we see is largely due to the interaction of the object with the incident light. The colour of the object is not within the object itself. Rather, it is in the light that shines upon it. When the light of a certain frequency falls on the object, the light frequencies that are absorbed never ...
Jul 16, 2024 · a material that allows a form of radiation to pass through it. transmit. when radiation impinges on matter that is transparent to it and the matter passes along radiation of the same frequency. emission. when matter releases energy in the form of radiation. This page titled 9.6: Interaction of Light with Matter is shared under a CC BY-NC-SA ...
(c) Light can also reflect from an object like a mirror. In the situations shown here, light interacts with objects large enough that it travels in straight lines, like a ray. Experiments show that when light interacts with an object several times larger than its wavelength, it travels in straight lines and acts like a ray.
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The high temperature of the Sun (6000 K) means that the majority of light emitted from the sun is in the visible region of the spectrum (350 – 800 nm, or 12,500 – 28,600 cm–1), in addition to some UV and infrared light. Earth, on the other hand, is much colder and emits light in the infrared (1 = 200 – 1400 cm–1). a.
