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3 giorni fa · The electromagnetic spectrum comprises the span of all electromagnetic radiation and consists of many subranges, commonly referred to as portions, such as visible light or ultraviolet radiation. The various portions bear different names based on differences in behaviour in the emission, transmission, and absorption of the ...
- The Editors of Encyclopaedia Britannica
18 ore fa · Incandescent light bulb. A 230-volt incandescent light bulb with a medium-sized E27 (Edison 27 mm) male screw base. The filament is visible as the mostly horizontal line between the vertical supply wires. A scanning electron microscope image of the tungsten filament of an incandescent light bulb. Elaborate light in Denver, Colorado.
5 giorni fa · Luminous Intensity. Luminous intensity refers to the quantity of visible light that a source emits per unit solid angle in a specific direction. It is a fundamental concept in photometry and helps gauge the brightness perceived by an observer from a particular source.
18 ore fa · Under different vapor temperatures, light intensities and light frequencies, transverse spin relaxation times are separately measured for 133Cs atoms in different hyperfine levels.
3 giorni fa · The web color light blue is part of the X11 color system, with a hue code of 194. This color is closer to cyan than to blue. Variations of this color are known as sky blue, baby blue, or angel blue. The first recorded use of "light blue" as a color term in English is in the year 1915.
1 giorno fa · Ultraviolet (UV) light is electromagnetic radiation of wavelengths of 10–400 nanometers, shorter than that of visible light, but longer than X-rays. UV radiation is present in sunlight, and constitutes about 10% of the total electromagnetic radiation output from the Sun.
5 giorni fa · Different colours – sometimes flashing to indicate that a change is imminent – work best for the human brain, while a single light works better for autonomous cars.
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