The earth’s climate is largely controlled by how much of the sun’s light and heat is absorbed and reflected. By absorbing the sun’s heat, trees cool the air. The interaction of this relationship with an area’s topography (地势), latitude (纬度), and altitude, can create microclimate...
A light guide is a device used to direct light from a light source (commonly an LED) to a place where the light is needed. Light guides are also sometimes referred to as light pipes.
it can be transmitted, reflected or absorbed. The object is made of molecules, and each molecule has electrons, capable of jumping to higher energy levels by absorbing energy. A light packet has a certain amount of energy in it according to its frequency– the higher...
They are absorbed by the object. The darker the color, the less light is reflected and the more light is absorbed. Light that is absorbed is turned into heat. For this reason, dark-colored clothes are warmer in the sunlight than light-colored clothes. ...
reflectance, such as matte or textured surfaces, the reflected light is scattered more evenly. this allows for better coverage, minimizing the amount of light needed to achieve desired brightness levels and resulting in energy savings. how does diffuse reflection impact the appearance of printed ...
Any light that is not absorbed by a glass or reflected at its surface will be transmitted through the glass. It is often very important to know exactly how much light will pass through a glass at specified wavelengths. Often, glasses are discussed in terms of their transmittance or transmissio...
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Because the colors we see are the result of absorbed, reflected, and transmitted light on an object, the quality and type of lighting has a large effect. An object that is dimly lit will reflect darker shade while brightly lit objects reflect a more saturated color. Similarly, a yellowish...
Just as the electron absorbed some amount of energy to reach this excited level, it can also release this energy. The electron can simply relax, and in turn rid itself of some energy. This emitted energy comes in the form of photons (light energy). The photon emitted has a very specific...
The sun, for example, is a natural source of visible waves. When looking at an object, our eyes see the color of light reflected, and all other colors are absorbed. Ultraviolet: Ultraviolet (UV) rays are what cause us to become sunburned. Humans can't see UV rays, but some insects ...