This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Briefly explain why spectral lines are useful in determining the temperature of their source. ... (Read 8 times)

Mr. Wonderful

  • Hero Member
  • *****
  • Posts: 866
on: Jul 27, 2018
Briefly explain why spectral lines are useful in determining the temperature of their source.
 
  What will be an ideal response?

Question 2

In principle, if we could see all the way to the cosmological horizon we could see the Big Bang taking place. However, our view is blocked for times prior to about 380,000 years after the Big Bang. Why?
 
  A) Before that time, the universe was too crowded with stars.
  B) Before that time, the gas in the universe was dense and ionized and therefore did not allow light to travel freely.
  C) Before that time, the universe was dark so there was no light to illuminate anything.
  D) 380,000 years after the Big Bang marks the time when stars were first born, and thus began to shine the light by which we can see the universe.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

dantucker

  • Sr. Member
  • ****
  • Posts: 346
Reply #1 on: Jul 27, 2018
Answer to Question 1

Different ionization states of the same element have different sets of spectral lines. Thus, we can identify the ionization state, which tells us about the temperature because higher temperatures are required to reach higher ionization states.

Answer to Question 2

B


Mr. Wonderful

  • Member
  • Posts: 866
Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

lkanara2

  • Member
  • Posts: 329
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

Did you know?

In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.

Did you know?

Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

Did you know?

Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

The nurse needs to note the source of the patient health history The nurse needs to note the source of the patient health history
Temperature and Color Temperature and Color
Dred Scott and his wife and children are featured on the cover of Frank Leslie’s Illustrated Newspap Dred Scott and his wife and children are featured on the cover of Frank Leslie’s Illustrated Newspap
A pleasant smile can go a long way, even through telephone lines. A pleasant smile can go a long way, even through telephone lines.
The relationship between RH and temperature. The relationship between RH and temperature.
Controls of Temperature Controls of Temperature
Video: Asthma Treatment

For a complete list of videos, visit our video library