« previous next »

Author Question: A _____ is a piece of glass with thousands of microscopic parallel lines scribed onto its surface to ... (Read 60 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?

The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

Did you know?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Did you know?

Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.

Did you know?

The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Glass pedestrian bridge in Zhangjiajie’s Grand Canyon, China Glass pedestrian bridge in Zhangjiajie’s Grand Canyon, China
Display piece, Yoruba culture. Display piece, Yoruba culture.
Typical secondary ignition pattern. Note the lack of firing lines on superimposed pattern. Typical secondary ignition pattern. Note the lack of firing lines on superimposed pattern.
Applications and Processing of Ceramics - Glass Forming Applications and Processing of Ceramics - Glass Forming
Using a magnifying glass Using a magnifying glass
Major Surface-Ocean Currents Major Surface-Ocean Currents
Video: Appendicitis Animation

For a complete list of videos, visit our video library