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This site was created for ThinkQuest '99
by Karolina, Ryan, and Elizabeth
with coach Mr. Holcomb.

 Lasers Quiz

1. Diffraction is
created from a powerful beam of light through stimulated emission of radiation
the bending of light around an object in it's path
emitted by every single thing, with its amounts based on the object's temperature

2. A good example of diffraction is
a mirror
a rainbow

3. Far away objects appear blurry because
our eyes are not strong enough
waves can not travel large distances
light is bent to get around the objects

4. Diffraction gratings are used to figure out
the wavelength of the light passing through the grates
the frequency of the light passing through the grates
how much light is passing through the grates

5. The spacing of the lines in a diffraction grating can be calculated by
determining the lines per mm and dividing 1 by that number
determining the lines per cm and dividing 1 by that number
determining the lines per in and dividing 2 by that number

6. The more lines in a grating, the
dimmer the image it gives
fuzzier the image it gives
sharper the image it gives

7. Wavelength in a grating can be found using the equation
Wavelength=d*sin theta
Wavelength=a*sin theta
Wavelength=c*sin theta

8. White light turns into
the spectrum
wavelengths
pigment

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