【题目】T he 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.T he interaction of this relationship with an area's topography(地势), latitude, and altitude, can create microclimates(...
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...
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.
Proper aiming and shielding is fundamental to decreasing light pollution. Buy fixtures that fully encase bulbs so all the light is shining down where it's actually needed, not shooting off in every direction. Once you've addressed your own abode, consider encouraging others to take steps as wel...
A black light bulb produces UVA light (as opposed to UVB light, which is much more harmful). Ultraviolet light frequencies are above violet on the spectrum and are invisible to the human eye. What you see glowing under a black light, whether on a fluorescent poster or an invisible hand ...
Unlike the previous method, this lighting system directs the light source to another surface so that part of the light is absorbed and the other is reflected in the opposite direction, producing a soft light without directing bulks of light onto a single surface. In short, we can say that ...
diffuse reflection plays a role in energy-efficient lighting by improving the distribution of light and reducing the need for excessive illumination. by using materials with high diffuse reflectance, such as matte or textured surfaces, the reflected light is scattered more evenly. this allows for ...
Light hits an object. Specific lightwaves reflect off some materials and get absorbed by others. That reflected light enters the eye, where the lens focuses it toward cones and rods. The cones and rods react to the light and encode it into signals the brain can read. ...
Explain how light interacts with pigments. How can we use indicator species to help determine water quality? Describe where common substances belong on the pH scale. What is the effect of ph on cellobiose? Explain how the wavelengths absorbed and reflected determine the color of a pigment. ...
Magnification:The light is reflected or refracted to magnify the beam Optical Combination:The digital image lands on the combiner surface to overlap the real-world view Heads-Up Display Design Heads-up displays involve human perception, making them very complex to design and test. Engineering metrics...