Examlex
either give an example or prove that there are none.
-A graph with vertex-chromatic number equal to 6.
Photometer
An instrument that measures light intensity.
Immersion Oil
A type of oil used to increase the resolution of a microscope by reducing the refraction of light between the glass slide and the objective lens.
Prepared Specimen
A sample of biological material, such as tissue, blood, or urine, that has been treated or arranged for laboratory examination or study.
Dry Objective
A microscope lens used without the aid of immersion oil for lower magnification observation.
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