Why do we always have crystal ball covered?
While surfing the web, I came across a fascinating article on Twitter.
It sounds like a fun topic, so we decided to simulate the refraction of all light entering a crystal ball.
As a result of the simulation, it was found that a focus was formed slightly behind the marble.
If there is a flammable material in the focus area, a fire may occur. (Crystal looks cold, but it’s actually fire-attribute…)