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Author Question: Why do we know that the red Balmer emission line in hydrogen represents a smaller quantum leap than ... (Read 81 times)

AEWBW

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on: Jul 27, 2018
Why do we know that the red Balmer emission line in hydrogen represents a smaller quantum leap than the violet line?
 
  What will be an ideal response?

Question 2

Approximately how many stars does a dwarf elliptical galaxy have?
 
  A) 1 trillion
  B) less than a million
  C) 100 billion
  D) less than a billion
  E) 10 billion


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recede

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Reply #1 on: Jul 27, 2018
Answer to Question 1

Red light has a longer wavelength than violet light; therefore a red photon contains less energy than a violet one. Since the photon given off when an electron's energy level changes has an energy equal to the energy difference between the two levels, the less energetic photon represents a smaller difference.

Answer to Question 2

D


AEWBW

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Reply #2 on: Jul 27, 2018
Thanks


recede

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Reply #3 on: Jul 27, 2018
Welcome :)


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