PHYSICS 109: Exam 1
35 Cards in this Set
| Front | Back |
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wave
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periodic disturbance traveling in space and time
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specular reflection
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like a mirror; surface is metallic and smooth
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diffuse reflection
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scatter; 1 ray-->many rays
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luminant
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emits light (ex. lightbulb)
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scatterer
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light needs a ______ to be seen (ex. fog)
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towards
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When a light beam goes into a denser medium, it kinks ______the normal
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away from
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When a light beam goes into a less dense medium, it kinks _____ the normal
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---
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Snell's Law
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49 degrees
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critical angle for water
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total internal reflection
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if the angle of light is greater than the critical angle
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1
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n for air
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1.33
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n for water
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optical axis
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center line of the lens
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virtual; same side as object; only demagnify
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resulting image from diverging lens
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M=i/o=h(i)/h(o)
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magnification equation
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1/o + 1/i = 1/f
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lens equation
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inverted
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the image on the retina is _________
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near point
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shortest distance of distinct vision
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myopic
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nearsighted
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presbyopic
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farsighted
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1/f(meters)
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dioptric power
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converging
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all cameras have a _______ lens
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exposure time (T); film speed (ISO); aperture (f number)
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3 parameters of photography
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depth of field
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the range of object distances that produce adequately focused images on film
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greater
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When there is a smaller aperture, there is a _________ depth of field
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cones
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color, high resolution, central vision, bright light
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rods
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low resolution, peripheral vision, dim light
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more
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As you move right on the ISO scale, there is _______ light on the film
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less
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As you move right on the exposure time (T) scale, there is _______ light on the film
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less
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As you move right on the f-number scale, there is ______ light on the film.
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grainy/pixely
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As you move right on the ISO scale, the image will be __________
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blurry (for moving objects)
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As you move left on the T scale, the image will be more ________
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lose depth of field
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As you move left on the f-number scale, you ___________
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increase depth of field
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As you move right on the T scale, you __________
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thick; short
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A strong converging lens is one that is _______ and has a _______ focal length
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PHYSICS 109: exam 3