« previous next »

Author Question: Why are different spectral lines, such as helium, more visible in the corona than in the Sun's ... (Read 34 times)

elizabeth18

  • Hero Member
  • *****
  • Posts: 559
on: Jul 27, 2018
Why are different spectral lines, such as helium, more visible in the corona than in the Sun's normal absorption spectrum?
 
  What will be an ideal response?

Question 2

Give at least two advantages of the Kelvin temperature scale for astronomers.
 
  What will be an ideal response?


shewald78

  • Sr. Member
  • ****
  • Posts: 340
Reply #1 on: Jul 27, 2018
Answer to Question 1

The corona is much hotter, and can ionize helium, which the photosphere is too cool to do.

Answer to Question 2

It is an absolute scale, so there are never any negative readings. Wein's and Stefan's laws are only mathematically correct if Kelvin temperatures are used.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

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?

One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

Did you know?

The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

Desert cottontail as seen from behind such that the white tail is easily visible Desert cottontail as seen from behind such that the white tail is easily visible
Breast Palpation Methods, Parallel Lines Breast Palpation Methods, Parallel Lines
Imaginary Thoracic Lines, Left Lateral View Imaginary Thoracic Lines, Left Lateral View
Alternative forms of surgeries involving the uterus, ovaries, and fallopian tubes. The solid lines i Alternative forms of surgeries involving the uterus, ovaries, and fallopian tubes. The solid lines i
Solar Corona Solar Corona
Offset Method Plot of Land with Offset Lines Offset Method Plot of Land with Offset Lines
Video: Coronary Heart Disease Animation

For a complete list of videos, visit our video library