What are the different types of binoculars?

First, the types of binoculars are classified according to the type of electromagnetic (EM) radiation used for observation. The largest types of binoculars are optical binoculars that observe the visible part of the EM spectrum, followed by radio binoculars, infrared telescopes, gamma radiation binoculars and X -ray telescope. From the Earth's surface, only visible light and radio waves are easy to observe - most other types of electromagnetic radiation are blocked by the Earth's atmosphere. Thus, this radiation must be largely observed using space types of binoculars, such as the recently launched Spitzer Space Binoculars, which is exclusively dedicated to infrared light.

Although the basic technologies needed to build a telescope, polished lenses, it was widespread since the 11th century, until 1608 created several Dutch lenses, the most famous Hans Lippershey, the first functional telescopes. These "Dutch perspective glasses" only enlarged objects using the factorR three. Galileo Galilei heard the basic concept of traveling in Venice in May 1609 and independently re -created a telescope, eventually came up with a version that could enlarge objects by 32.

refractive telescopes were the first main types of binoculars to remain popular for hundreds of years. But there was a limit to how powerful they could be. These telescopes required larger and larger lenses to become stronger, but due to size it becomes exponentially more difficult, due to minor imperfections in the glass and "lens sagging" caused by the strength of gravity affecting the lens.

In 1688, Isaac Newton created the first practical reflecting telescope, intended to solve the problem of chromatic aberration universal among refractive telescopes of that time. The reflective telescope introduced another specimen for types of binoculars available for early scientists. Reflection gaveEco -migration can be much stronger than refractive types of binoculars because it is easier to make large, perfect mirrors than lenses. Some modern telescopes, called catadioptric telescopes, use a combination of mirrors and lenses to distinguish objects, but binoculars are still the most common.