Capillarity – this phenomenon has been known to physicists for hundreds of years, but only nature could make use of this phenomenon. In a way, we talked about, but also to… crystallization of water-soluble substances. Krystalizacja z roztworów z wykorzystaniem zjawiska włoskowatości zdarza się na


High-quality steel has equal strength 1 000 MPa. Meanwhile, already in 1923 years were calculated, that the crystal strength of ordinary table salt should be 5000 MPa, so five times more. According to the same calculations, pure iron should have even greater strength, …


Anyone can grow a crystal. Each, who only wants to, and without any special devices, chemicals or laboratory equipment. All you need is willingness and patience. Before that, however, I propose to inspect the crystals. The most beautiful crystals can be found in the geological museum. Są tam


One of the characteristic and important elements of the folk costume from the vicinity of Krakow were ornaments made of natural coral. It was placed in rings, crosses, earrings and were used to decorate bonnets. The beads were threaded on a string and hung around the neck, a każda dziewczyna i