They make things seen at a length larger.
In microbiology, lenses are used to magnify images; most high-school microscopes magnify up to 400 times the size of what you are looking at. Lenses can also magnify solar energy.
They make things seen at a length larger.
Nuclear weapons. Telescopes. The Calendar.
Terrestrial telescopes are generally manned, while space telescopes are unmanned. However, to a greater and greater extent, the people doing the observing are not the people actually manning the telescopes; the observations are done remotely from other universities around the world. The various space telescopes, such as the Hubble, the Kepler, or the Spitzer, or the soon-to-be-launched Webb, are remotely controlled in the same manner that everything is controlled these days; remotely, via computer.
Many people use a telescope. Astronomers, scientists, astronauts, cosmic data analysts. Even anyone who merely has a curiosity and wishes to know what is beyond our atmosphere uses a telescope.
Radio telescopes are basically specially designed antennas. They don't "see" anything. They "hear".
They make things seen at a length larger.
Lenses can help people to see better. Lenses are needed in telescopes for astronomers to see distant things in the night sky.
Nuclear weapons. Telescopes. The Calendar.
Lenses are either concave or convex. Concave lenses curve inward from both sides, and convex lenses curve outward one side and inward on the other. Concave and convex lenses change the image to be able to see from close or far distances.These are used for glasses, magnifying glasses, and telescopes.
It was sometime around 1670 that van Leeuwenhhoek made his big advancement in creating lenses with a higher magnification. He had microscopes for many years before that but was unable to see anything at better resolution than many other people. Shortly after developing the new lenses and finding a way to mount them in a microscope, he began to communicate his results to the Royal Society. His first communications included a description of the microscopic observations of a bee. It was a few years later than he discovered and communicated the first observations of single celled microorganisms.
Terrestrial telescopes are generally manned, while space telescopes are unmanned. However, to a greater and greater extent, the people doing the observing are not the people actually manning the telescopes; the observations are done remotely from other universities around the world. The various space telescopes, such as the Hubble, the Kepler, or the Spitzer, or the soon-to-be-launched Webb, are remotely controlled in the same manner that everything is controlled these days; remotely, via computer.
Hi! We usually use Hand lenses (Loupes), and microscopes for observing fossils. Sometimes, some people will use Dslr cameras with large lenses to photograph micro remains too.
Your phrasing is a bit sloppy. Microscopes do not see anything. People can use microscopes to enable them to see extremely small objects. Microscopes use lenses to bend light in such a way as to magnify images. A microscope is more powerful than a magnifying glass because more than one lens is used, in series. The light is bent, and then bent again, for even more bending.
Many people use a telescope. Astronomers, scientists, astronauts, cosmic data analysts. Even anyone who merely has a curiosity and wishes to know what is beyond our atmosphere uses a telescope.
A telescope is used to enable people to see very distant things (typically these distant things are astronomical in nature, although telescopes are sometimes used to view things on Earth as well) and microscopes are used to enable people to see very small things, such as bacteria.
Thousands of people still do build their own astronomical telescopes; it isn't that hard to do.
like other people, why?