Etymology:
Meaning:
Origin:
The word "ballast" ultimately comes from the Greek word "ballein," meaning "to throw." The original ballista was a military weapon used to hurl projectiles, such as stones or bolts. The device consisted of a heavy base and a large wooden arm that was pulled back and released to launch the projectile.
During the Medieval period, the ballista was adapted for use on ships as a counterweight to help stabilize the vessel in rough seas. Over time, the term "ballast" came to be applied more generally to any heavy object used for balancing and stability.
In the electrical context, ballast is used to describe a device that regulates the flow of current in a circuit. This type of ballast is typically used in fluorescent lighting fixtures, where it serves to limit the current flow and provide the necessary voltage to ignite the fluorescent lamp.
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