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| Emergency light
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Continuously charging battery operated light that is used during the loss of normal electricity. |
| Emery
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Abrasive material composed of iron oxide and carborundum. |
| Emery abrasive
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Emery is a natural abrasive easily recognized by its distinctive black color. |
| Emery paper
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Paper with a hard abrasive coating. |
| Eminent domain
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Right of the government to condemn private land for public use, as long as fair compensation is paid. |
| Emission
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A discharge of any type. |
| Emission factor
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A measure of the average amount of a specified pollutant or material emitted for a specific type of fuel or process. |
| Emission standard
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A voluntary guideline or government regulation that specifies the maximum rate at which a contaminant can be released from a source. |
| Emission(s)
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A substance(s) or pollutant emitted as a result of a process. |
| Emissivity
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The ratio of the radiant energy (heat) leaving (being emitted by) a surface to that of a black body at the same temperature and with the same area; expressed as a number between 0 and 1. |
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