How many refracting telescopes are there in the world?

Answer 1

to answer your question there are four categories of telescopes (1) optical telescopes: it uses concave mirrors in reflecting telescopes and they were created to collect light and be used to view distant objects by using the light to form the image. (2) radio telescopes: they are used to detect energy in the visible spectrum(light)and they also detect energy that has been emitted in wavelengths across the electromagnetic spectrum and can prove that some of the energy emits more non-visible radiation (radio waves) than the others, they are mostly used at night but for some certain areas they are used to understand different reactions during the day. (3) infrared telescopes: they are used to collect and photograph Infrared radiation to provide a complex type of map (heat map) to help study an object or area under investigation. (4) telescopes in space: collecting information using telescopes on earth, wether they are optical, radio or infrared are all subject to a degree of interference by the atmosphere which is why astronomers commonly use telescopes out side the earths atmosphere because of the minimal interference. An example of one is the Hubble space telescope launched in 1990 by NASA and two months later it was discovered that the telescopes mirror had been ground to flat and would not focus sharply. In 1994, after 30 hours of space walks by 5 astronauts, ten button-sized mirrors were installed to remedy the fault. A resolution 10 times better than that of any telescope on Earth was achieved.

hope this thoroughly answered your question and the extra info is just for a further understanding of telescopes thanks for referring to my answer made by D.F

Answer 2

There are seven kinds of microscopes. These are the optical microscopes, X-ray microscopes, scanning acoustic microscopes, scanning helium ion microscopes, neutron microscopes, electron microscopes and scanning probe microscopes.

Answer 3

A very large number, since that description could fit everything from the Lick Observatory telescope in the mountains east of San Jose to your average pocket spyglass.

If you are referring to astronomical telescopes, the number is much smaller. Most astronomical telescopes, and all built in the last 75 years or so, are "reflecting" telescopes. This is because reflecting telescopes can be built to be much smaller and more powerful, and it is easier to precisely grind large mirrors than large lenses.

However, many home astronomy telescopes are "reflecting" for the main lens, but still have small "refractor" telescopes as "spotter" scopes.

Answer 4

Thousands and thousands and thousands. Maybe millions. It's hard to say.

Answer 5

there is 298 types of telescopes