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Expert: Daniel Mazur - 9/28/2007


Question
I just have a couple of question that I need double checking on and my mom or dad does not understand any of this stuff. If you can help that would be great.

1. The shortest wavelength within the visible spectrum is _____ light?
(my answer) orange

2. Reflecting telescopes are popular because they're what?
(my answer)more powerful than a refracting telescope

3. A typical mirror in a persons house would be an example of what kind of mirror?

4. The term "angle of deviation" is used in reference to what?
(my answer) a prism

5. A material that transmits nearly all the light in a ray because it offers little resistance to the light is ?
(my answer) fluorescent

Thank you if you can help.I'vegot the rest of the 96 questions down packed just need a little help. Also if you can give any kind of explanation to the questions I will appreciate it a lot. Thank You again.


Answer
Hello Angelina,
I'll be glad to help.
1. violet (ultra-violet is just beyond the visible spectrum)
2. they have better resolution because the chromatic error does not occur (lenses diffract light differently for different wavelength, but visible wavelengths reflect all the same way on a mirror surface)
3. planar mirror
4. yes, prism sounds correct
5. the word is "translucent", fluorescent refers to one wavelength being absorbed and another radiated.

I hope this helps,
Cheers,
Daniel

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