Focus (optics)
Galilean transformation
Legendre transformation
Lens
Light
Luz
Optical instrument
Optical microscope
Optical power
Optics
Photodetector
Photometry (optics)
Principio de Fermat
Reflexión de la luz
Refracción
Refraction
Refractive index
Shadow
Sistema visual humano
Sistema óptico
Snell's law
Spectral line
Spectroscopy
Speed of light
Telescope
Thermal radiation
Velocidad de la luz
Óptica
Aurora
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