The wavelengths of light and radio waves, unlike high energy gamma radiation, are much shorter. A. true B. false 相关知识点: 试题来源: 解析 B 正确答案:B 解析:比较结构的理解。本题要求听者分辨清所比较之物及其对比关系。原文谈到nuclear energy(核能)时,将其解释为high energy gamma radiation(...
There are different wavelengths of the visible light spectrum, each corresponding to different colors and penetrating the skin to different depths. It is thought that LED light produces different effects depending on the level of skin it penetrates. The most common frequencies used in LED light ther...
The device for visible light also has a very high transmission rate (>70%). But how can you prevent the limiter of reflected light for injury to others? We recommend 3mm thick phosphate glass substrates, because the absorption of wavelengths of light by doped phosphate glasses 99%, transmissio...
aThe “standard of Living” of any country means the average 正在翻译,请等待...[translate] avisible light ,considered to be light with wavelengths from 800nm and 400nm, acts in the same way as UV light. 可见光,认为轻的以波长从800nm和400nm,行动,以与紫外光相似的方式。[translate]...
This invention is directed towards a method of using visible light at wavelengths of at least 500 nm and above in combination with a sensitizer having a flavin moiety to reduce any pathogens that may be contained in blood and blood components. By exposing the blood and blood components to ...
a range of wavelengths on whichegradio signals are broadcast.banda de ondas/frecuencias ˈwavelengthnoun the distance from any given point on one (radioetc) wave to the corresponding point on the next.longitud de onda wave aside to dismiss (a suggestionetc) without paying much attention to it...
light emitting diodes of different wavelengths on endothelial cellsin vitro. Human umbilical vein endothelial cells were treated with either 475 nm, 516 nm or 635 nm light. Control cells were not illuminated. 2D proliferation was quantified by manual counting. HUVEC migration was analyzed by...
the wavelengths are comparable to the dimensions of the equipment, which is difficult to arrange with visible light but easier with radiowaves, and if the photon energies are still negligibly small, then a very useful approximation can be made by studying the behavior of the waves, still disre...
UltaViolet Light:Ultraviolet light is a part of the electromagnetic spectrum. Ultraviolet rays have frequencies greater than the frequency of visible light but lower than the frequency of X-rays. The wavelength of ultraviolet light is shorter than visible light and longer than that of X-rays. O...
The new data came from a NASA satellite instrument called the VisibleInfrared Imaging Radiometer Suite (VIRS). It can measure longwavelengths of light, such as those produced by traditionalyellow-and-orange sodium-vapor street lamps. But VIIRS cannot see theshort-wavelength blue light produced by ...