Upload
scott-ryan
View
217
Download
0
Tags:
Embed Size (px)
Citation preview
Branch of physics Branch of physics dealing dealing withwith the the
nature and nature and properties of light properties of light
and vision.and vision.
77
The Spectrum of The Spectrum of Visible LightVisible Light
The visible part of the spectrum may be further subdivided according to color, with red at the long wavelength end and violet at the short wavelength end.
99
•White light White light is a mixture is a mixture of all colors of all colors of lightof light
•The color of The color of light is light is determined determined by the by the wavelength.wavelength.
1122
Law of Law of ReflectioReflectio
nnThe angle of which the ray hits the surface is equal to the angle from which it is reflected.
2200
Refraction of Light
• Refraction occurs when light’s velocity changes
• Remember: The speed of light is different in different materials.
• As light travels from one material to another, it is bent….this is called refraction.
2266
Farsightedness or hyperopia is the inability of the eye to focus on nearby objects. The farsighted eye has no difficulty viewing distant objects.
3300
The lenses in eyeglasses bend light
waves by means ofA diffraction
B interferenceC reflectionD refraction
3355