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  2. Joule - Wikipedia

    en.wikipedia.org/wiki/Joule

    The joule (/ dʒ uː l / JOOL, or / dʒ aʊ l / JOWL; symbol: J) is the unit of energy in the International System of Units (SI). [1] It is equal to the amount of work done when a force of one newton displaces a mass through a distance of one metre in the direction of that force.

  3. Units of energy - Wikipedia

    en.wikipedia.org/wiki/Units_of_energy

    Energy is defined via work, so the SI unit of energy is the same as the unit of work – the joule (J), named in honour of James Prescott Joule [1] and his experiments on the mechanical equivalent of heat. In slightly more fundamental terms, 1 joule is equal to 1 newton metre and, in terms of SI base units

  4. Orders of magnitude (energy) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(energy)

    The joule is named after James Prescott Joule. As with every SI unit named for a person, its symbol starts with an upper case letter (J), but when written in full, it follows the rules for capitalisation of a common noun; i.e., joule becomes capitalised at the beginning of a sentence and in titles but is otherwise in lower case.

  5. British thermal unit - Wikipedia

    en.wikipedia.org/wiki/British_thermal_unit

    The British thermal unit (Btu) is a measure of heat, which is a form of energy. ... It is equal to 1.8 Btu or 1,899 joules. [26] In 1974, this unit was "still ...

  6. Electric potential energy - Wikipedia

    en.wikipedia.org/wiki/Electric_potential_energy

    Electric potential energy is a potential energy (measured in joules) that results from conservative Coulomb forces and is associated with the configuration of a particular set of point charges within a defined system.

  7. Specific energy - Wikipedia

    en.wikipedia.org/wiki/Specific_energy

    The SI unit for specific energy is the joule per kilogram (J/kg). Other units still in use worldwide in some contexts are the kilocalorie per gram (Cal/g or kcal/g), mostly in food-related topics, and watt-hours per kilogram (W⋅h/kg) in the field of batteries.

  8. Here’s What Joules Group Plc’s (LON:JOUL) P/E Is Telling Us

    www.aol.com/news/joules-group-plc-lon-joul...

    The goal of this article is to teach you how to use price to earnings ratios (P/E ratios). To keep it practical, we'll show how Joules Group Plc's (LON:JOUL) P/E Read More...

  9. Heat - Wikipedia

    en.wikipedia.org/wiki/Heat

    As a form of energy, heat has the unit joule (J) in the International System of Units (SI). In addition, many applied branches of engineering use other, traditional units, such as the British thermal unit (BTU) and the calorie. The standard unit for the rate of heating is the watt (W), defined as one joule per second.