Examlex
Catalina Erauso belonged to what ethnic group?
Optical Instrument
An optical instrument is a device designed to manipulate light in order to view or analyze objects with enhanced detail.
Refraction
The bending of light by the cornea, lens, and eye fluids to focus light onto the retina.
Specific Gravity
A measure of the density of a substance compared to the density of water.
Centrifuge
A machine that uses centrifugal force to separate substances of different densities, such as blood components.
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