Interesting facts about binoculars

Did you know it? Let’s light up some interesting facts about binoculars you might not know.

Fact about binoculars №1

The purpose of the device depends on the length and size of the pipes: compact and medium models (with a lens up to 40 mm) are suitable for basic observations, review (for example, binoculars for birdwatching).

Fact №2

If visibility is poor, full-size (up to 60 mm) and large-size binoculars (60-110 mm) are required. The parameters of their lenses allow you to collect more light, thus the image is bright, contrasting, but the weight will certainly be significant.

Fact №3

The largest binoculars are tripod-mounted and used for astronomical and field observations. Astronomical binoculars can even replace a telescope.

With ordinary binoculars in the starry sky, you can see:

  • the brightest satellites and meteors;
  • the moon;
  • some planets (Mars during periods of opposition, Jupiter, Saturn);
  • large star clusters (Pleiades, Manger);
  • some nebulae (the most famous is the Orion nebula).

Fact about binoculars №4

Most often you can find variations of 8×40, as well as 10×42 binoculars.

Fact №5

The first binoculars, which did not have anti-reflective coatings, suffered from light scattered inside the tube, making images hazy and low-contrast

Fact №6

The first number in the name of the binoculars is magnification. How many times the binoculars magnify objects. The second number is the diameter of its lenses in millimeters.

Fact about binoculars №7

Although the most common binoculars are 8x and 10x, there are also binoculars with very low magnifications, ranging from 2x to 4x. Why so few? This low power is used in night vision binoculars as well as in theater binoculars – because a large magnification is not required indoors.

Fact №8

The name of the device "binoculars" from Latin means "two eyes" (bi oculus). The Italian Galileo Galilei became the very man who in 1609 invented an optical device with two lenses (scattering and collecting), thus laying the foundation for the history of binoculars. The first binoculars were made of two optical tubes connected and had a small magnification – about 3 times.