Absorption And Emmission Spectra

[Elnino_Gerrard]

Sometimes i see questions which say what would be the difference between the absorption and Emission spectrum for the given Element. Im not sure how you go about doing these?

[Elnino_Gerrard]

?

[Whatlol]

Do you mean like finding what energies can be emitted , but not absorbed?

[schnappy]

An absorption spectrum describes which wavelengths of light are absorbed into the material. Remembering that a photon either gives all (is absorbed) of its energy, or none at all (is reflected).

An emission spectrum describes which wavelengths of light are emitted from the material. That is, the wavelengths that the material can emit -> derived from energy levels.

An emission spectra has more lines on it because there are more energy transitions down than there is up. (The VCAA pretend that double upwards transitions do not exist, even though they do - they are just incredibly rare)

Remembering wavelength and energies are one in the same since they are only linked by constant values.

All intuitive after some thought.

[physics]

i think the emission spectra is the one with black background and bright band lines randomly.
and absorption is colourful background with balck lines.


someone can confirm??

[schnappy]

Yes it is, but that's a poor explanation imo.

[Elnino_Gerrard]

An absorption spectrum describes which wavelengths of light are absorbed into the material. Remembering that a photon either gives all (is absorbed) of its energy, or none at all (is reflected).

An emission spectrum describes which wavelengths of light are emitted from the material. That is, the wavelengths that the material can emit -> derived from energy levels.

An emission spectra has more lines on it because there are more energy transitions down than there is up. (The VCAA pretend that double upwards transitions do not exist, even though they do - they are just incredibly rare)

Remembering wavelength and energies are one in the same since they are only linked by constant values.

All intuitive after some thought.

Ahhhhi seee Thanks Mate. Makes sense