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Diamonds sparkle because of ...
Total internal reflection
The ratio of light speed in a vacuum to light speed in a medium is called?
The index of refraction
What 3 rays do we draw when we draw a ray diagram for a convex mirror?
Towards the focus, towards the center of curvature, and parallel to the principal axis.
The angle of incidence and the angle of reflection are always ________?
Equal
What kind of image will a concave mirror produce when an object is placed at F?
No image.
What kind of an image will a converging mirror produce when an object is placed between F and the mirror?
Larger, upright, behind the mirror, virtual
What kind of image will a diverging mirror produce?
Smaller, upright, behind the mirror, virtual
Is the index of refraction of diamond high or low?
High
Refraction and Reflection never happen at the same time. True or false?
False
Name one example of specular reflection
Light shined at a clean flat mirror; The sky reflected off a calm lake
Name one example of diffuse reflection
Objects we see in everyday life, crumpled up aluminum foil, etc.
Glow-in-the-dark stuff is an example of what source of light?
Phosphorescence
When speaking of sources of light, a mirror is what kind of source of light?
Non-luminous
Name one source of light from a natural source
???
Is incandescent light hot or cold?
Hot
When light speeds up, it bends towards the normal. True or false?
False
A crime-scene investigator shines a UV light around a room, and sees a splotch of light on the ground. What is this effect called?
Fluorescence
Bioluminescence is?
light produced from chemical reactions in living organisms
Two quartz crystals are rubbed together and produce some light. What is this called?
Triboluminescence
The light from glowsticks is an example of?
Chemiluminescence
What does it mean to diverge?
To come apart in different directions
What does it mean to "converge"
to come together at a single point
What speed does light travel at in a vacuum?
3*10^8 m / s
Light is ?
an electromagnetic wave that moves in a straight line
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