1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
KATRIN_1 [288]
3 years ago
12

PLEASE HELP!! ILL GIVE BRAINLIEST :((!!

Biology
1 answer:
melisa1 [442]3 years ago
4 0
Reflecting telescopes
Telescopes that use lenses are called refracting telescopes. The other type uses mirrors to focus the light of the image. These telescopes are called reflecting telescopes. Refracting telescopes use lenses to bend the light to a specific focal point such that the object will be magnified to the viewer.

light microscope
Optical instruments are based on optics. They use mirrors and lenses to reflect and refract light and form images. The light microscope and telescope use convex lenses and mirrors to make enlarged images of very tiny or distant objects. A camera uses a convex lens to make a reduced image of an object.

Refracting telescopes use lenses to focus the light, and reflecting telescopes use mirrors. I'll talk first about refracting ones. Refracting telescopes work by using two lenses to focus the light and make it look like the object is closer to you than it really is. Both lenses are in a shape that's called 'convex'.

the reflector telescope uses a mirror to gather and focus light. All celestial objects (including those in our solar system) are so far away that all of the light rays coming from them reach the Earth as parallel rays. Because the light rays are parallel to each other, the reflector telescope's mirror has a parabolic shape. The parabolic-shaped mirror focusses the parallel lights rays to a single point. All modern research telescopes and large amateur ones are of the reflector type because of its advantages over the refractor telescope.

Advantages

Reflector telescopes do not suffer from chromatic aberration because all wavelengths will reflect off the mirror in the same way.
Support for the objective mirror is all along the back side so they can be made very BIG!
Reflector telescopes are cheaper to make than refractors of the same size.
Because light is reflecting off the objective, rather than passing through it, only one side of the reflector telescope's objective needs to be perfect.

Disadvantages

It is easy to get the optics out of alignment.
A reflector telescope's tube is open to the outside and the optics need frequent cleaning.
Often a secondary mirror is used to redirect the light into a more convenient viewing spot. The secondary mirror and its supports can produce diffraction effects: bright objects have spikes (the ``christmas star effect'').

hope this helped!




You might be interested in
If you placed rubbing alcohol into corn oil which one floats and which one will sink
german
Rubbing alcohol will float and corn oil will sink
8 0
3 years ago
Which sentence would be inappropriate in an informational piece of writing with a formal tone?
vaieri [72.5K]

Answer: C

Explanation:

The answer C sounds more like the way that you would describe the story to a friend, which would be very informal.  Answers A, and B sound more like the way you might tell the story to your teacher in a report.

Hope this helps! <3

6 0
3 years ago
Read 2 more answers
What are the organs that comprise the circulatory system?
Nostrana [21]

Answer:

Explanation:

The circulatory system consists of typically two organs these are the heart which also belong to the cardiovascular system and the lungs which also belong to the respiratory system these are connected to the arteries, veins and other blood vessels. The lungs receives the oxygen which diffuse oxygen into the blood vessels which transports the oxygenated blood to the heart which is pumped and circulated by the heart to all the parts of the body.    

7 0
3 years ago
PLS ANSWER CORRECTLY FOR 50 POINTS
Serhud [2]

Answer: you would then put more sand on top and wait then a little more water!

Explanation:

Because you have to sublimated the leaves

4 0
3 years ago
An apple falls off a tree onto the ground. Which of the following best describes what eventually happens to the material that ma
lana [24]

Answer:

D. Microscopic organisms break down the apple and release its material into the soil and air.

Explanation:

Without microscopic organisms today, everything that has died or fallen will still remain on the ground. Fungi, bacteria, and etc. play an essential role in the Earth's ecosystem by breaking down organic material.

4 0
3 years ago
Other questions:
  • A nurse in a mental health clinic is caring for a client who has bipolar disorder
    12·1 answer
  • Which part of the skin contains blood vessels, nerves, and glands?
    11·2 answers
  • How do scientists know what the surface of venus looks like?
    6·1 answer
  • Energy<br> as it transfers from one consumer to the next.
    8·1 answer
  • A natural killer (NK) cell is a type of________ that has _____receptors extending from its plasma membrane.
    8·1 answer
  • Who recognized the different layers of rock contained unique collections of fossils?
    8·1 answer
  • Please Helpp! ( ENVIRONMENTAL SCIENCE )
    11·1 answer
  • Internal feedback mechanisms keep your body in homeostasis as
    15·2 answers
  • The haploid cells join during sexual reproduction are called _______?
    13·1 answer
  • True or false: Meiosis is a method of reproduction for some single-celled organisms
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!