Binoculars are optical devices that are used to help our eyes see objects which are very far. This helps the object to appear clearer. Another name of binoculars is telescope.
Based on the principle of its work, there are 4 types of binoculars which are binoculars bias, reflective binoculars, hybrid binoculars (combined bias and reflection) and space binoculars.
Here is the explanation of the types of binoculars and functions:
Then, in 1611, Keppler improved the design of binoculars using two convex lenses. The convex (convex) lens is the objective and the ocular lens.
Based on the use of binoculars, it is divided into 4 types with different ways of working. Here are a variety of binoculars:
The largest example of binoculars in the world is binoculars located at the Yerkes Observatory in Winconsin, USA. These binoculars have an objective lens that is 1-meter-wide so that light can be captured by these binoculars.
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Earth binoculars are used for terrestrial observations of earth conditions and objects on earth that are located far from the eye. Because it has a long shape, it is not easy to bring it anywhere. So then, people created periscopes and stage binoculars that are shorter in shape but the principle is still the same.
These binoculars use the same pair of isosceles prisms which are inserted between the objective and the ocular lens. This pair of prisms will form a shadow with perfect reflection.
Currently binoculars are often used by birdwatchers for bird-watching activities.
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This arrangement was conceived by Galileo Galilei, later called Galilei binoculars or stage binoculars.
So the final shadow produced is upright and enlarged with two lenses, a positive lens as an objective lens located in front to see the object and the negative lens as an ocular lens placed near the eye of the observer.
Objects with small light intensity may look better with reflector binoculars than refractors. Therefore, this telescope is often used by astronomers to observe deep sky objects such as nebula, galaxy, open cluster, comet and other objects that have a small light intensity.
In addition, there are other reflective binoculars that have the same function which are the Cassegrain binoculars and Gregorian binoculars.
The advantages of this binoculars are the wide view angle and the ultimate insurance of the lens or mirror is higher than the other binoculars. This two-lens incorporation system is called the catechoptrics used on the lighthouse system. It is also used on the microscope and telephoto lens on the camera. Read also oxidizing material effect
This hubble telescope is very helpful to scientists in observing and learning about the object of outer space and the universe by placing the telescope at about 600 km above sea level. Hubble is rotating against the earth like a moon with a speed of 8 km per second. The time it takes is about 97 minutes so in a day, it can rotate 16 times.
The binoculars consists of two concave mirrors and is equipped with antenna, computer, camera and spectrograph. There is an electronic detector in the form of a camera capable of collecting the starlight captured by a mirror. The captured image is converted to digital code and radiated to earth with an antenna with the ability to send data 1 million bits per second. The code is converted into photographs and spectrographs that spell out into a rainbow spectrum like the principle of prism work.
With the help of binoculars, this system can help scientists to observe events in space. Events ever caught by these binoculars is the incidence of supernovae, the planet to 10 (xena) and the satellite Gabrielle even temperature and age of celestial bodies can be known along with the chemical elements in it.
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Those are the discussion of various types of binoculars and functions. It is interesting to learn the development of binoculars from simple until advanced which can observe the object of outer space. And you as the young generations, still have a lot of time to develop these things. May this be useful for you.
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