a small glass or plastic tube that contains a piece of wire is an example of what?
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A test tube, also known as a culture tube or sample tube, is a common piece of laboratory glassware consisting of a finger-like length of glass or clear plastic tubing, open at the top and closed at the bottom.
Other names: Culture tube
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A small glass or plastic tube that contains a piece of wire is an example of a Fuse.
A fuse is an electrical safety device that protects an electrical circuit against overcurrent in electronics and electrical engineering. Its most important component is a metal wire or strip that melts when too much current travels through it, causing the current to cease or interrupt. It's a sacrificial device; once a fuse has blown, it's an open circuit that needs to be repaired or replaced, depending on the type of fuse.
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