Examlex
Graffiti is usually an expression of
Energy Resources
Natural resources that can be converted into energy to perform work, such as coal, oil, natural gas, sunlight, and wind.
Heat-To-Work Conversion
The process of converting thermal energy (heat) into mechanical work, such as in steam engines, combustion engines, and power plants.
Energy Quality
A measure of the ability of a type of energy to do useful work, accounting for factors such as efficiency and accessibility.
Second Law of Thermodynamics
A fundamental principle stating that the total entropy of an isolated system can never decrease over time, and processes that increase entropy are naturally spontaneous.
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