« previous next »

Author Question: Explain why the majority of large modern telescopes are not refractors. What will be an ideal ... (Read 105 times)

ss2343

  • Hero Member
  • *****
  • Posts: 548
on: Jul 27, 2018
Explain why the majority of large modern telescopes are not refractors.
 
  What will be an ideal response?

Question 2

In an eclipsing binary, the orbits are face-on so you can see both stars orbiting each other at all times.
 
  a. True
  b. False
  Indicate whether the statement is true or false


bulacsom

  • Sr. Member
  • ****
  • Posts: 329
Reply #1 on: Jul 27, 2018
Answer to Question 1

Refracting telescopes suffer from chromatic aberration, which limits their usefulness, whereas reflecting telescopes do not have this problem. The primary lens of a refracting telescope is much more difficult to manufacture than a mirror of the same size, and is more expensive.

Answer to Question 2

False


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

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.

Did you know?

The horizontal fraction bar was introduced by the Arabs.

Did you know?

Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Anatomy of the large intestine Anatomy of the large intestine
Large Octopus Large Octopus
The vast majority of older adults live in their own homes, even when they need special equipment or ... The vast majority of older adults live in their own homes, even when they need special equipment or ...
E9-23 Prepare income statements Explain the difference in operating income E9-23 Prepare income statements Explain the difference in operating income
A very light ideal spring stretches by when it is used to hang a 135-N object. What is the ... A very light ideal spring stretches by when it is used to hang a 135-N object. What is the ...
The Scale of the Very Small and Very Large: Powers of 10 The Scale of the Very Small and Very Large: Powers of 10
Video: Autonomic Nervous System Animation

For a complete list of videos, visit our video library