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Author Question: The amount of light from an incandescent lamp that is transmitted through an ideal Polaroid filter ... (Read 156 times)

kshipps

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on: Jul 29, 2018
The amount of light from an incandescent lamp that is transmitted through an ideal Polaroid filter is half, and through a real Polaroid filter is
 
  A) less than half.
  B) more than half.
  C) half.

Question 2

What accounts for the additional few minutes of sunlight we experience daily, before sunrise and after sunset?
 
  What will be an ideal response?


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Li Jun

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: A

Answer to Question 2

Answer: Atmospheric refraction adds to daylight time. When we see the Sun on the horizon, it is already below it. Refraction makes it appear higher in the sky, and we have about 9 minutes of additional sunlight per day because of atmospheric refraction.


kshipps

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Reply 2 on: Jul 29, 2018
Wow, this really help

kthug

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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