They light up by passing electricity through a gas, which produces ultraviolet light. This ultraviolet light then stimulates a fluorescent coating on the inside of the bulb to produce visible light. While CFL Bulbs are more energy-efficient than traditional incandescent bulbs, they still lag behind...
This first stage produces simple molecules, which can then recombine to make more complex molecules if this astonishing experiment is successful. What we're going to do now is warm the system a little to see what the ice does.第一步产生简单的分子,如果这个惊人的实验成功的话,这些简单的分子就...
Excimer lasers are pulsed gas discharge lasers that produce ultraviolet (UV) light. A chemical reaction with an excimer or an excited dimer is used to power the excimer laser. An excimer can be defined as a heterodimeric or a dimeric molecule that is short-lived, formed from two atom species...
Mercury vapor produces ultraviolet light when an electric current passes through it. The ultraviolet light then excites the phosphor coating, causing it to emit visible light. The tube contains metal electrodes at each end, and these electrodes’ coating enables easy electron production. ...
3 Take the case of Eta Carinae, one of the most explosive stars in the universe. This star produces ultraviolet laser rays (紫外线) and it will destroy itself in a few million years’ time. It is five times brighter than the sun and when it explodes it is going to be a sight worth...
A germicidal lamp is an electric light that produces ultraviolet C light. This short-wave ultraviolet light disrupts DNA base pairing, causing formation of pyrimidine dimers, and leads to the inactivation of bacteria, viruses, and protozoa. It can also be used to produce ozone for water disinfect...
If you have placed a prism in the sun, then you have likely noticed the rainbow effect it produces. This is because white light is a mixture of all the colors of the visible spectrum, and when it passes through a prism, it is separated–or diffracted–into its component colors. This is...
The light energy the sun produces that reaches Earth is comprised of electromagnetic radiation of three primary types.Each type of light is part of the solar spectrum that makes up solar irradiance— which measures the total amount of energy available from sunlight....
light aging test simulates the harm that sunshine, moisture, and temperature have on durable materials by using a fluorescent UV light. The fluorescent UV lamp produces more UV light than visible or infrared light rays while electrically being similar to a standard cold fluorescent bulb for ...
What produces all light energy? Which alternative energy source is exhaustible? How is energy from the Sun distributed around Earth? Where does chemical energy come from? The ultimate source of the energy in food is What are some sources of electromagnetic radiation?