Analysis
Another class of optical instrument is used to analyze the properties of light or optical materials. They include:
- Interferometer for measuring the interference properties of light waves
- Photometer for measuring light intensity
- Polarimeter for measuring dispersion or rotation of polarized light
- Reflectometer for measuring the reflectivity of a surface or object
- Refractometer for measuring refractive index of various materials, invented by Ernst Abbe
- Spectrometer or monochromator for generating or measuring a portion of the optical spectrum, for the purpose of chemical or material analysis.
- Autocollimator which is used to measure angular deflections.
- Vertometer which is used to determine refractive power of lenses such as glasses, contact lenses and magnifier lens
DNA sequencers can be considered optical instruments as they analyse the color and intensity of the light emitted by a fluorochrome attached to a specific nucleotide of a DNA strand.
Surface plasmon resonance-based instruments use refractometry to measure and analyze biomolecular interactions.
Read more about this topic: Optical Devices
Famous quotes containing the word analysis:
“Ask anyone committed to Marxist analysis how many angels on the head of a pin, and you will be asked in return to never mind the angels, tell me who controls the production of pins.”
—Joan Didion (b. 1934)
“Cubism had been an analysis of the object and an attempt to put it before us in its totality; both as analysis and as synthesis, it was a criticism of appearance. Surrealism transmuted the object, and suddenly a canvas became an apparition: a new figuration, a real transfiguration.”
—Octavio Paz (b. 1914)
“Analysis as an instrument of enlightenment and civilization is good, in so far as it shatters absurd convictions, acts as a solvent upon natural prejudices, and undermines authority; good, in other words, in that it sets free, refines, humanizes, makes slaves ripe for freedom. But it is bad, very bad, in so far as it stands in the way of action, cannot shape the vital forces, maims life at its roots. Analysis can be a very unappetizing affair, as much so as death.”
—Thomas Mann (1875–1955)