Spectroscopy
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Define wavelength
Wavelength is defined as the distance between adjacent peaks
Define colorimetry
Colorimetry is the science of measuring colours
What is a colorimeter (in general)?
Any tool that characterises colour samples to provide an objective measure of colour characteristics
What is a colorimeter (in chemistry)?
The colorimeter is an apparatus that allows the absorbance of a solution at a particular frequency (colour) of visual light to be determined
What is a spectrophotometer?
A photometer (a device for measuring light intensity) that can measure intensity as a function of the colour, or more specifically, the wavelength of light
What is spectroscopy?
A type of chemical analysis done by shining light on a sample to determine what is inside
What does a spectrophotometer consist of?
A spectrometer and a photometer
What is the purpose of the spectrometer in the spectrophotometer?
It produces light of any selected colour (wavelength)
What is the purpose of the photometer in the spectrophotometer?
It measures the intensity of light
Define absorbance.
A quantitative measure of the extent to which a compound absorbs ultraviolet-visible radiation at a particular wavelength
Define transmission.
A quantitative measure of the extent to which a compound absorbs ultraviolet-visible radiation at particular wavelength