What is Energy?

Discussion in 'Pseudoscience' started by Willem, Apr 16, 2019.

  1. Willem Registered Member

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    We know energy as photons, but even this is captured energy in a spacetime structure. So what is energy?
     
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  3. Michael 345 New year. PRESENT is 69 years old Valued Senior Member

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    A Mars bar according to the advert "Mars gives you energy"

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  5. Willem Registered Member

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    I have an answer: energy is the stuff responsible for giving a particle a wavelength.
     
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  7. origin In a democracy you deserve the leaders you elect. Valued Senior Member

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    Photons are not energy.
    I do not know what that means.
    Good question.
    From Wiki on energy:
    In physics, energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object.
    That is a pretty good definition.
     
  8. origin In a democracy you deserve the leaders you elect. Valued Senior Member

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    That is more of an example than a definition. The higher the energy that a photon carries the shorter the wavelength.
     
  9. origin In a democracy you deserve the leaders you elect. Valued Senior Member

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    Willem, if you asked questions you could learn a lot here. If you come here and make statements based on ignorance and then refuse all help to correct your misconceptions then you are wasting just everyone's time.
     
  10. exchemist Valued Senior Member

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    Energy is a property of a physical system, with dimensions ML²/T². Like linear and angular momentum, it is a property that is conserved, in a closed system. There are many definitions, perhaps the commonest being the ability to do mechanical work.

    One of the important things to realise about energy is that it is not "stuff". It is not an entity, it is an attribute. You cannot have a jug of energy.

    A photon therefore is not energy. A photon is a physical entity that has energy as one of its properties.
     
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  11. Michael 345 New year. PRESENT is 69 years old Valued Senior Member

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    That's not what my bar tender tells me

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  12. river

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    Energy comes in at least two forms ; electromagnetic , light energy

    And speed energy of a physical macro thing . Atoms and molecules .

    You can use water to cut metal . At very high pressures .
     
  13. RainbowSingularity Valued Senior Member

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    any occlusion of content or activity that creates instance of measurable occurrence in any instance
     

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