Fluorescent lamps require a ballast to stabilize the current through the lamp, and to provide the initial striking voltage required to start the arc discharge. This increases the cost of fluorescent light fixtures, though often one ballast is shared between two or more lamps.
n. a deed to real property which guarantees that the seller owns clear title which can be transferred (conveyed). A grant deed generally is a warranty deed, while a quit claim deed is not. (See: warrant, grant deed)
A warranty deed is a legal document that transfers ownerhsip to real estate. When you own a piece of real estate in the United States you don't have to fence off your property and stick a flag in the ground to mark the property as yours.