solar spectrum


Also found in: Dictionary, Wikipedia.

solar spectrum

The Sun's spectrum extends from gamma-ray to radio wavelengths. It has an immense range in intensity, peaking at visible wavelengths. Although the central part of the curve varies little with solar activity, the long- and short-wavelength sections can be very considerably affected. The radiation intensity at visible and infrared wavelengths compares with that of a black body at a temperature of about 6000 K; the maximum intensity occurs at wavelengths of about 460 nm. This is the continuous spectrum of the photosphere in which absorption lines – Fraunhofer lines – appear. At the shortest and longest wavelengths, the solar spectrum corresponds to the radiation curve of a black body at about a million kelvin, which is representative of the temperatures of the corona and of solar flares. At ultraviolet and soft X-ray wavelengths the spectrum does not agree with either of these black-body curves. See also flash spectrum.

solar spectrum

[′sō·lər ′spek·trəm]
(astrophysics)
The spectrum of the sun's electromagnetic radiation extending over the whole electromagnetic spectrum, from wavelengths of 10-9 centimeter to 30 kilometers.

solar spectrum

The bandwidth of radiant energy—from long wave to short wave. It consists of radio waves, microwaves, visible light (red and violet), ultraviolet rays, X rays, and gamma rays. See electromagnetic spectrum.
References in periodicals archive ?
In order to simulated the effect of the dust on the solar cells, a preliminary experimental study must be done to calculate the solar spectrum under a dusty glass, A piece of glass with surface of 10x10 [cm.
12 September 2017 - Recently merged US-based solar power companies Horizon Solar Power and Solar Spectrum have inked definitive agreements for two business acquisitions, the companies said.
Not only does this merger position Solar Spectrum, which will be operated going forward under its Sungevity brand, as the largest residential solar company in Southern California, but also as one of the fastest growing solar companies in the country.
The SHGC depends on the optical and thermal properties of the window assembly, climatic conditions, air mass, solar spectrum, and solar angle of incidence (Klems 2000; Kuhn et al.
Different locations have different amounts of ozone, water vapor, aerosols, and clouds, which can all affect the solar spectrum reaching the surface of the Earth (Fig.
This larger crystal size shifts the reflectance emphasis across the solar spectrum.
Our research team has developed a simple and cost-effective fabrication technique to create solar absorbers that can harness a greater share of the solar spectrum, thus increasing their efficiencies, while also maintaining low emission levels," said Masdar Institute's Dr.
Since the ultraviolet region of the solar spectrum only accounts for 3% of the energy striking the earth from the sun, it plays a minor role when calculating the TSR.
Before the solar spectrum can be accurately measured, the spectrometer needs to be calibrated.
NASA spent some thousands of dollars developing paints that appear white, red, black and two shades of blue in the visible spectrum, yet absorbed the same energy over the full solar spectrum.
Our next step is to develop a photo-catalyst better matched to the solar spectrum," MacDonnell said.
The property of tailoring the bandgaps is suitable for the proficient absorption within the visible region of the solar spectrum that comprises of about 46% of the entire solar spectrum.