« previous next »

Author Question: A _____ is a piece of glass with thousands of microscopic parallel lines scribed onto its surface to ... (Read 19 times)

casperchen82

  • Hero Member
  • *****
  • Posts: 540
on: Jul 27, 2018
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
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

Did you know?

Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

Though “Krazy Glue” or “Super Glue” has the ability to seal small wounds, it is not recommended for this purpose since it contains many substances that should not enter the body through the skin, and may be harmful.

A soil surface crust that includes nitrogen-fixing, soil-enriching cyanobacteria. A soil surface crust that includes nitrogen-fixing, soil-enriching cyanobacteria.
Surface Features on Europa Surface Features on Europa
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
viable surface sampling using contact plates viable surface sampling using contact plates
Surface ocean currents Surface ocean currents
Microscopic Anatomy of a Muscle Microscopic Anatomy of a Muscle
Video: Insulin (glucose uptake by body cells), glycogenesis and lipogenesis

For a complete list of videos, visit our video library