Question

Chromatography Terms

1.Transmittance

2.Emission

3. Fluorescne

4. phosphorescnce

5. Line spectrum

6. Ground state

7. Excitd state

8. Path Length

9.Moar Absorptivity

10. coherent Radiation

11. Monochrometer

12. Diffraction Grating

Answer 1

1.Transmittance = typically, the fraciton of the incident electromagnetism which will be transmnitted through a sample ( in a surface)

2.Emission = the spectrum of serverall frequencies that are "emitted" due to the trnasitions of this species. I.e. You will find

3. Fluorescne = emission of light. Typically, it must have absorbed some energy via light/electromagnetic radiaitons. it has a lower energy than the source

4. phosphorescnce = similar to fluorescence,e but it will not instantly emmit light, i.e. time must pass as contrary to fluorescence

5. Line spectrum = typical test of spectral lines formed due to excitation of electron in a species ( elements )

6. Ground state = typical "non excited" state. The most basic state, i.e. lowest energy

7. Excitd state = Higher energy state than thte ground state

8. Path Length = The lenght which will be accounted in total, this works specially in order to identify how "long" the path is for light to cross

9.Molar Absorptivity = is a property in which we measure how "well" a species will attenuate light. Also onte that this depends on poath lenght + concentration

10. coherent Radiation = the coherence is the time from the longest time scale into the intesnity of the light, and must be preiodical regarding the radiation source.

11. Monochrometer = device/equipment used to transmit light in several wavleneghts

12. Diffraction Grating = device used to split rays, useful in order to change the emission spectrum