Physics, 14.02.2020 18:26 princessa15266

There are different types of telescopes. I want you to make masterful and beautiful drawings of how each one redirects light, label its parts and what types of mirrors/lenses it uses. How does focal length affect a telescope?

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Answer from: briizy

The focal length affects in a telescope its field of view.

Explanation:

Refracting telescopes use lenses, the convex lens in the aperture refracts the light since the beams are passing from one transparent media (air) to another (glass).

Then, the refracted rays go directly to the eyepiece (as is shown in the image below).

Reflecting telescopes, on the other hand, have a more complex configuration, in which they have a concave mirror that redirects light to another mirror or lens and then to the eyepiece.

However, professional telescopes (which often are refracting telescope) can have a variety of different lenses and mirrors in their configuration (see one of the images below for an example of types of lenses and mirrors).

The focal length is the distance between the objective (the mirror or lens) and the focal plane (the point at which the image is formed). The focal length affects in a telescope its field of view.

The larger the focal length, the smaller the field of view.

There are different types of telescopes. I want you to make masterful and beautiful drawings of how

Answer from: Quest

sleep paralysis is a parasomnia, events associated with sleep.

sleep paralysis happens when you are in the middle of waking up or falling asleep. it is the feeling of being conscious but unable to move. it definitely involves hallucinations.

i had a friend that had sleep paralysis and he told me a story one time where he was laying in bed and he couldn't move his body no matter how hard he tried and there was someone standing in the corner of his room coming towards him. he couldn't move and you can't "wake up" because you are already conscious. sometimes sleep paralysis can be triggered by frequent waking up during the night based off of multiple trips to the bathroom, or if you had ever been abused, sleep paralysis can start happening from things like that.

Answer from: Quest

a) electrical > light, sound, and thermal< < < <

) the mechanical energy of the firefighter moving.< < < < a) electrical > light, sound, and thermal< < < <

c) both a and b.

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