Examlex
Replace the symbol "?" to make the resulting statement true for all real numbers : t, b, and c, whenever the expressions are defined.
Cornea
The transparent front part of the eye that covers the iris, pupil, and anterior chamber, providing most of the eye's optical power.
Visible Spectrum
The portion of electromagnetic radiation that is visible to the human eye, typically encompassing wavelengths from about 380 to 750 nanometers.
Hue
A color or shade of color perceived in an object, determined by the wavelength of light it reflects.
Longest Wavelength
Refers to the type of electromagnetic waves with the lowest frequencies and, correspondingly, the longest physical wavelengths.
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