« previous next »

Author Question: Why are different spectral lines, such as helium, more visible in the corona than in the Sun's ... (Read 47 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?

Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Did you know?

The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

Did you know?

The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

By reflecting most visible light, snow creates a much cooler microclimate than nearby bare ground. By reflecting most visible light, snow creates a much cooler microclimate than nearby bare ground.
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
Spectral and photochemical properties of photoactivatable fluorescent proteins. Spectral and photochemical properties of photoactivatable fluorescent proteins.
Fontanels and suture lines Fontanels and suture lines
Opener Spectral karyotyping of human chromosomes Opener Spectral karyotyping of human chromosomes
Light micrograph of a live diatom, with chloroplasts visible through the shell Light micrograph of a live diatom, with chloroplasts visible through the shell
Video: HDL (high density lipoprotein)

For a complete list of videos, visit our video library