This topic contains a solution. Click here to go to the answer

Author Question: A ____ is a piece of glass with many small parallel lines etched on its surface to produce a ... (Read 38 times)

dmcintosh

  • Hero Member
  • *****
  • Posts: 517
A ____ is a piece of glass with many small parallel lines etched on its surface to produce a spectrum.
 
  a. grating
  b. spectrograph
  c. photometer
  d. charge-coupled device
  e. prism

Question 2

Stars of spectra type K have strong Balmer lines.
 
  Indicate whether the statement is true or false



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Danny Ewald

  • Sr. Member
  • ****
  • Posts: 332
Answer to Question 1

A

Answer to Question 2

F



dmcintosh

  • Hero Member
  • *****
  • Posts: 517
Both answers were spot on, thank you once again



Danny Ewald

  • Sr. Member
  • ****
  • Posts: 332

 

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

The horizontal fraction bar was introduced by the Arabs.

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

For a complete list of videos, visit our video library