Ocean Optics Dragon - Manual (Page 17)

Chapter 3: Quantum Software Icons
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Color fill
Quantum can fill the space under the spectrum with an artificial display of spectral color. The color
display covers the visible range of 380nm to 780nm. Outside that range is
UV and NIR (near infrared)
where the human eye cannot detect color.
Transmission mode
Note
Transmission and Absorption modes are only enabled when dark and reference readings
have been stored.
Transmission is the amount of light transmitted through the sample as a percentage of the light
transmitted through the reference. When you select Transmission mode, the y-axis units change to
percentage.
Where:
S
λ
= Sample intensity at wavelength λ
D
λ
= Dark intensity at wavelength λ
R
λ
= Reference intensity at wavelength λ
Absorbance mode
Note
Transmission and Absorption modes are only enabled when dark and reference readings
have been stored.
Absorbance is the amount of light absorbed by the sample compared to the reference.