Переведено и озвучено: https://vk.com/public60480847
Оригинал: https://www.youtube.com/watch?v=sHCHEykUxP4
Leanback: http://bit.ly/YwNHiF

Материально поблагодарить меня за озвучку можно через: https://boosty.to/voicepower
https://yoomoney.ru/to/41001106158836/

This reproduction 5th order Fresnel was modeled after the original manufactured by Barbier and Fenestre, Paris in 1877. The 180 degree fixed lens is equipped with 180 degrees of prismatic reflectors at the rear of the lens.