PLASMA GLOBE Meaning and
Definition
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A plasma globe is a unique type of electrical device that consists of a transparent glass sphere filled with a low-pressure gas, typically a mixture of neon and argon. It is known for its mesmerizing visual display of glowing colorful streams or filaments that move and dance within the globe when it is electrified.
When the plasma globe is turned on, a high-frequency alternating current is applied to an electrode in the center of the globe. This creates a high-voltage electric field inside the sphere, causing the gas molecules to ionize and form plasma. The plasma is a state of matter in which atoms are partially or fully stripped of their electrons, allowing them to conduct electricity.
As the electric field changes rapidly, the plasma responds by generating random and branching patterns of luminous discharges or streamers. These electric currents essentially follow the path of least resistance inside the globe, creating a mesmerizing visual spectacle.
The plasma globe is often admired for its vivid and captivating display as the streams of plasma appear to react to touch, attracting the fingertips of people who come close to its glass surface. By merely placing a hand on the glass, the filaments tend to attract and follow the path of the touch, creating a stunning interactive experience.
Plasma globes have gained popularity as decorative objects, scientific curiosities, and educational tools as they offer a tangible and visual representation of principles related to gas discharge and electrical phenomena.
Etymology of PLASMA GLOBE
The word "plasma" originates from the Ancient Greek word "πλάσμα" (plasma), which means "something molded" or "formed substance". This term was mainly used in the context of clay or wax modeling. The modern usage of "plasma" emerged in the late 19th century to describe a state of matter composed of highly energized, ionized gas.
The term "globe" comes from the Latin word "globus", which means a spherical object or shape. It has been used to refer to various objects throughout history, including spheres, globes, or globular containers.
When combined, "plasma globe" simply refers to a globe-shaped object or device that contains plasma. It is typically associated with a glass sphere filled with a mixture of gases, which creates a visually captivating display when electricity is applied to it.
