As microscopes typically use visible, infrared (IR) or ultraviolet (UV) light in the form of a lamp or laser, a scientific camera is essentially a device that needs to detect and count photons using asensor. 由于显微镜通常以灯或激光的形式使用可见光、红外线 (IR) 或紫外线 (UV),因此科学相...
(redirected fromVisible Ultraviolet Experiment) AcronymDefinition VUEVoices in Urban Education VUEVirtual University Education VUEVirtual University Enterprises VUEVivendi Universal Entertainment VUEVisual User Environment(HPUX) VUEViolent Unknown Event(film) ...
In this International Year of Light, it is particularly appropriate to review the historical concept of what is light and the controversies surrounding the extent of the visible spectrum. Today we recognize that light possesses both a wave and particle nature. It is also clear that the limits ...
The radiometric system is employed by physicists to quantify radiant energy independent of wavelength; whereas photometric quantities are only used for visible light, but radiometric quantities and units apply in the ultraviolet and infrared spectral regions as well.23 Detailed terms, quantities, and ...
Ultraviolet spectrophotometry and visible-wavelength polarimetry of stellar wind variability in Delta Orionis A 喜欢 0 阅读量: 42 作者:Snow,DP Hayes 摘要: 90 关键词: Polarimetry Stellar Spectrophotometry Stellar Winds Ultraviolet Spectra Light (Visible Radiation Oao 3 Spaceborne Astronomy DOI: 10.1086/...
Visible light falls in the range of the EM spectrum between infrared (IR) and ultraviolet (UV). It has frequencies of about 4 × 1014 to 8 × 1014 cycles per second, or hertz (Hz) and wavelengths of about 740 nanometers (nm) or 2.9 × 10−5 inches, to 380 nm (1.5 × 10−...
Germicidal ultraviolet disinfection is rapid, low-maintenance, and does not use chemicals or produce byproducts. To achieve proper disinfection of water, air, or surfaces, each medium must be exposed to UV-C light (at the wavelength of 254 nanometers) for an appropriate amount of time, dependi...
Beyond visible blue light are ultraviolet (UV) rays, which cannot be seen by the eye, and have even shorter wavelengths and higher energy than blue light. Foster Grant® Blue Light Glasses and Reading Glasses Foster Grant® blue light glasses and reading glasses help filter blue-violet ...
polar bear skin is actually black.To humans and other animals that can see only in visible light,the bears appear to blend in with their snowy surroundings.But reindeer,which polar bears sometimes hunt for,can see in ultraviolet light (紫外线),which makes polar bears stand out from their ...
Researchers around the globe have developed polymers(聚合物)and other materials that begin to break down when they absorb either ultraviolet(UV,紫外线)or visible light. But tissues also readily absorb UV and visible light,which means the drug release can be triggered only near the skin,where the...