It refracts the light rays (bends the light) and focusses the rays on the part of your eye that makes you see which makes the image larger. The convex lesn is used not concave! Conxes looks like this (). Concake like this )(. But as long as convex bends out word and concave inword you can tell the differcnce. :)
It magnifies the available (ambient) light. Night-vision technology amplifies available light by as much as 40,000 times.
Yes. If you know where to look, you can evensee it without a telescope, day or night.
Avoiding the larger rooms, which were dark and made fast for the night, heard the night break its silence with a long sigh as he composed himself to sleep.
Galileo Galilee
refriacting telescope
no
Yes, Mars can be seen at night without a telescope. It's a "naked eye object".
Often. In fact, it can often be seen at night without a telescope; it's fairly bright.
Image is everything.
pooo
The reflecting telescope
Get a bigger telescope. Resolution is proportional to the size of the telescope. But due to the atmosphere, there is a practical limit beyond which it makes no difference what the telescope size is.