A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor, to produce ultraviolet and make a phosphor coating in the lamp glow.

2018年4月30日 · Fluorescent lights generate more short-wavelength light than incandescent bulbs do. The spectrum of fluorescent lighting ranges from warm white to near daylight, depending on the lamp's phosphor coating. Fluorescent light …

White fluorescent lamps can mostly be specified by a combination of spectral class and color temperature. A few are known by color name alone, but those mostly have specific usual color temperatures and fall into established spectral/phosphor classes.

2022年5月4日 · Fluorescent light is on what is called an emissions spectrum. This means that its wavelengths are punctuated by lines. An incandescent bulb is on what's called a continuous spectrum.

2012年9月1日 · The combined spectrum of the mercury plus the phosphor yields the characteristic light of a fluorescent bulb. Fluorescent lights convert more than 20% of the electrical energy to light, which is 10 times more efficient than incandescent light bulbs.

2021年7月2日 · The two spectra are distinctly different: The spectrum of sunlight is shown as a continuous curve and rainbow. The spectrum of the light bulb consists of a set of discrete sections, shown as peaks on the graph and bands of color in the picture. Top Half: Continuous Emission Spectrum of the Sun

The visible spectrum is composed of light with wavelengths ranging from approximately 400 nanometers to 700 nanometers. Light waves with shorter wavelengths have higher frequency and higher energy. Light waves with longer wavelengths have lower frequency and lower energy.

2008年11月9日 · When fluorescent light passes through the spectroscope, the white light is spread out so that we can see the separate bands of colors. Here, it seems there are five different phosphors. For us to think we see white, colors from middle …

Fluorescent light spectra and incandescent light spectra differ in several ways. Fluorescent lights produce a more limited spectrum of colors compared to incandescent lights. They emit a series of discrete lines or bands of light, resulting in a more artificial and cooler appearance.

Two key factors must be considered when specifying the colour of a fluorescent tube - the correlated colour temperature (CCT) and the colour rendering index (CRI). The colour temperature is largely a matter of personal taste.