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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 ("input") and accomplishes some sort of work.
People have used mechanisms and machines to amplify their abilities since before written records were available. Generally these devices decrease the amount of force required to do a given amount of work, alter the direction of the force, or transform one form of motion or energy into another.
The mechanical advantage of a simple machine is the ratio between the force it exerts on the load and the input force applied. This does not entirely describe the machine's performance, as force is required to overcome friction as well. The mechanical efficiency of a machine is the ratio of the actual mechanical advantage (AMA) to the ideal mechanical advantage (IMA). Functioning physical machines are always less than 100% efficient.
More on [ Machine ]
Had a pulmonary embolism. @ Stanford hospital, plugged into machines
fancy_free (Joe Mathes) Sun, 20 Dec 2009 22:14:36 -0000
Had a pulmonary embolism. @ Stanford hospital, plugged into machines
@dawn_hall I haven't used it often, but the live CD has worked for me (on others' machines) in the past
00k (Roy Britten) Sun, 20 Dec 2009 22:12:51 -0000
@dawn_hall I haven't used it often, but the live CD has worked for me (on others' machines) in the past
Roasting! 15 roasts today to get fresh beans into machines for Christmas... I wonder how many of these are going under the Christmas tree?
coffeesnobs (Andy Freeman) Sun, 20 Dec 2009 22:12:02 -0000
Roasting! 15 roast
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