Fingertip crystal ball principle

The appearance is a high-strength glass ball shell filled with thin inert gas, and there is a black spherical electrode in the center of the glass ball. There is an oscillating circuit board at the bottom of the ball. Through the power converter, 12V low-voltage DC is converted into high-voltage high-frequency voltage and applied to the electrode.

After electrifying, the oscillating circuit generates a high-frequency voltage electric field. What should I give as a birthday present? Because the thin gas in the ball is ionized by high-frequency electric field, it is radiant and mysterious.

The light that happens is some linear glow, colorful and radiant, which is very beautiful in the dark. When people touch the ball with their hands (people are connected with the earth), the distribution of electric field and potential around the ball is no longer uniform and symmetrical, so the light around the finger becomes brighter, and the generated arc moves and twists with the touch of the hand and dances with the movement of the finger.

Celtic prehistoric tribe, known to exist in England in 2000 BC, was ruled by a religious figure named Druid, who was the first known person to use a crystal ball for divination. Interestingly, Druids are similar to Stonehenge in early England, so they may be the first people to use crystal divination.

Later, in the middle of medieval Europe (500- 1500), prophets, wizards, psychiatrists, Romans, fortune tellers and fortune tellers also used other types of crystals to "see" the past, present or future.

Beryl is called a natural gem, and is often used for divination because of its transparency. The inhabitants of the Scottish Highlands call it "the power of stones". Although the early crystal ball was made of beryl, it was later replaced by a more transparent colorless crystal.