The Multiplewavelength Dispersive UV Detector

A conventional multiple-wavelength dispersive UV detector is shown in Figure 3. Light from the source is collimated by two curved mirrors on to a holographic diffraction grating. The dispersed light is then focused by means of a curved mirror on to a plane mirror and light of a specific wavelength is selected by appropriately positioning the angle of the plane mirror. Light of the selected wavelength is then focused by means of a lens through the flow cell and, consequently, through the column eluent. The exit beam from the cell is then focused by another lens on to a photocell which gives a response that is some func-

Figure 3 The multiple-wavelength dispersive UV detector. Courtesy of the Perkin Elmer Corporation.

vantages but none of the disadvantages and, as a result, has become the variable-wavelength UV detector of choice.

Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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