Reference Article

from Wikipedia, the free encyclopedia

Machine

A machine is any mechanical or organic device that transmits or modifies energy to perform or assist in the performance of tasks.

It normally requires some energy source and accomplishes some sort of work.

Functioning physical machines are always less than 100% efficient.

Note: This article excerpts material from the Wikipedia article "Machine", which is released under the GNU Free Documentation License.

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last updated on 2014-07-31 at 11:37 am EDT

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