Will parallel mirrors create an infinite number of reflections?

No. Not a single mirror reflects 100% of the light, part of the light energy is necessarily absorbed, so that each subsequent reflection is dimmer and after a certain number of iterations of light is simply not enough to draw a distinguishable picture. In addition, to form each subsequent reflection, light travels more and more, and the picture becomes smaller. Imagine that we have a perfect mirror. Decreasing, one day the reflection will become less than the resolution of the eye. And we will not see him. You can, of course, use a telescope, but when the reflection size approaches the boundary of the light wavelength, no optics will help us.

Interesting numbers

Up to 1.1

liters of blood per minute are able to filter the kidneys


mammals are able to fly: out of 5416 species of our class, more than 1240 are bats

595, 000

electric cars produced in China in 2017 - more than in all other countries combined

5, 240, 000, 000 km

make up the general path of the Hayabusa2 probe, which reached the asteroid Ryugu and two years later should bring its samples to Earth

At 2400 m

tunnels of the Jinping neutrino laboratory, the deepest in the world, go into the thickness of the mountains

4 208 571 287

users reached the global Internet audience in June 2018 - this is 55.1% of the world's population

670, 000, 000, 000 pairs

the base contains the amoeba genome Polychaos dubium, one of the largest on Earth

6.61028 years

makes up the lifetime of an electron, one of the most stable elementary particles

The article “Questions and Answers” ​​was published in the journal Popular Mechanics (No. 12, December 2018).


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