Other optical properties

Other optical properties

Luminescence is called the phenomenon of "cold", i.e.. without increasing the temperature, body glow under the influence of various factors. Depending on the type of source that excites the glow, different types of luminescence are distinguished, like photoluminescence, wywołaną światłem dziennym

“Supernatural” properties of gemstones

The interest in stones has increased, when various supernatural properties began to be attributed to them, influencing the fate of their owners. In time, even a large amount of science was developed on the subject. The learned books have appeared, in which you could read, what …