Plazmalámpák

Plazmalámpák, also known as plasma globes or plasma balls, are fascinating decorative objects that display visible lightning-like streams of plasma. Inside a sealed glass sphere, a high-voltage electrode is surrounded by a mixture of inert gases, typically neon and argon. When the lamp is turned on, the electrode emits a high-frequency, high-voltage electrical field. This field energizes the gas molecules, stripping electrons from them and creating plasma.

The plasma then appears as colorful tendrils that extend from the central electrode towards the glass. These tendrils are actually channels of ionized gas that conduct electricity. The colors of the plasma depend on the specific gases used and the pressure within the sphere. For instance, a mixture of argon and neon can produce red and blue streams. Touching the outside of the glass sphere with your finger creates a point of lower electrical resistance, drawing the plasma tendrils towards that point, creating a dynamic and interactive display.

Plazmalámpák are often used as novelty items, desk decorations, or educational tools to demonstrate basic plasma physics. While they are visually engaging, it is important to note that the high voltages involved mean they should be handled with care and kept away from sensitive electronic devices or individuals with pacemakers. They are powered by a transformer that steps up the household voltage to the required high frequency and voltage. The sealed nature of the glass sphere ensures that the plasma remains contained and the gases are not released.