What type of spectrum can be produced by a solid?

What type of spectrum can be produced by a solid?

Since everything in the universe is above 0 K, all dense objects (solids, liquids, thick gases) will produce a thermal spectrum. The shape of a continuous spectrum depends on only the temperature of the object NOT its chemical composition.

What are spectral lines for gases?

When light passes through gas in the atmosphere some of the light at particular wavelengths is scattered resulting in darker bands. These lines came to be known as ‘spectral lines’ and were cataloged by heating common elements until they produced light and measuring the wavelengths emitted.

How is continuous spectrum produced?

Continuous spectra (also called thermal or blackbody spectra) arise from dense gases or solid objects which radiate heat. They emit radiation over a broad range of wavelengths, thus the spectra appear smooth and continuous.

What is a thermal spectrum?

Also found in: Thesaurus, Medical, Encyclopedia. a spectrum of rays considered solely with reference to their heating effect, especially of those rays which produce no luminous phenomena.

Which is an example of a continuous spectrum?

A continuous spectrum is a complete arrangement of colors, like that of the rainbow, devoid of spectral lines. Kirchhoff’s Second Law states that a thin, hot gas produces an emission line spectrum. An emission line spectrum is a spectrum with bright spectral lines juxtaposed against a dark background.

Which is an example of an emission line spectrum?

An emission line spectrum is a spectrum with bright spectral lines juxtaposed against a dark background. An example of this would be a sign using a gas, like neon, for a neon sign. Basically, an excited gas, in this case neon, will emit photons from its excited atoms.

What do the dark lines on the absorption spectrum mean?

An absorption line spectrum refers to dark spectral lines interspersed on a continuous spectrum. For a particular gas, the dark lines of its absorption spectrum will appear in the same wavelengths as that same gas’s bright lines of its emission spectrum.

Why are dark lines of a gas the same as bright lines?

For a particular gas, the dark lines of its absorption spectrum will appear in the same wavelengths as that same gas’s bright lines of its emission spectrum. In this case, it’s as if our light bulb, from the first law, is now surrounded by a cloud of gas.