Author Question: A _____ is a piece of glass with thousands of microscopic parallel lines scribed onto its surface to ... (Read 31 times)

casperchen82

  • Hero Member
  • *****
  • Posts: 540
A _____ is a piece of glass with thousands of microscopic parallel lines scribed onto its surface to produce a spectrum.
 
  A) grating
  B) charge-coupled device
  C) photometer
  D) spectrograph

Question 2

The main reason for connecting two or more telescopes in an interferometer is to:
 
  A) observe more objects in a shorter amount of time.
  B) improve resolving power.
  C) enhance seeing.
  D) increase diffraction fringes.



k2629

  • Sr. Member
  • ****
  • Posts: 357
Answer to Question 1

A

Answer to Question 2

B



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

Did you know?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

Did you know?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

Did you know?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Did you know?

It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

For a complete list of videos, visit our video library