Examlex
A ______ is a computer connected to a server.
Aperture
Aperture refers to the opening through which light enters in optical instruments, such as cameras and microscopes, and its size determines the amount of light that can pass through.
Iris Diaphragm
A component in optical devices used to control the amount of light that passes through a lens.
Ocular Lens
The lens within the eye that helps to focus light on the retina, allowing for clear vision.
Base
In chemistry, a substance that can accept hydrogen ions (protons) or more generally, donate a pair of valence electrons.
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