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Depending on the optical design, telescopes are divided into three types: lens (refractors), mirror (reflectors) and mirror-lens (catadioptrics)

A TV show devoted to the most desirable gifts for First Communion recommended acquiring Levenhuk LabZZ M101 Microscope, pytanienasniadanie.tvp.pl

Learn what a spider looks like under microscope, when the best time is to take photos of it, how to study it properly at magnification and more interesting facts about observing insects and arachnids

This review for beginner explorers of the micro world introduces you to the optical, illuminating and mechanical parts of a microscope and their functions

Space. Microworld. Knowledge book (two-volume edition). Learn more about these colorful and very interesting educational books

Video introduction to a wonderful educational book for kids and teenagers - Space. Non-empty emptiness. Knowledge book