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Machines: Difference between revisions
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[[File: | [[File:Machine-cog.jpg|alt=A poem about cogs in a machine.|thumb|Figure 1. A poem about cogs in a machine.]] | ||
'''A machine is a collection of enclosed parts that use energy to produce a desired function. This may be as simple as cogs in a drill press making holes in wood or employees working in a [[corporation]] to make profit.''' | '''A machine is a collection of enclosed parts that use energy to produce a desired function. This may be as simple as cogs in a drill press making holes in wood or employees working in a [[corporation]] to make profit.''' | ||
The majority of machines use a source of energy (such as electricity) to make two products | The majority of machines use a source of energy (such as electricity) to make two products: | ||
# A '''productive output''' called an internality such as holes/profit. | |||
# A '''waste output''' called an ''[[Externalities|externality]]'' such as wood shavings/waste. | |||
When the first machines were created they were refined by their creators in order to increase their productive output. For instance a drill press can be connected to a water wheel to make it more efficient and easy to use. At some point in this drive for improvement machines were placed together to form more productive units called a factory. | When the first machines were created they were refined by their creators in order to increase their productive output. For instance a drill press can be connected to a water wheel to make it more efficient and easy to use. At some point in this drive for improvement machines were placed together to form more productive units called a factory. | ||