0 Members and 1 Guest are viewing this topic.
Everyone knows that everything is run by energy…
…and comes in many forms such as electrical energy to power lightbulbs..
… but what is the true pure form of energy.
And if we are energy beings then our conciousness is cumulated energy so as proven by science that energy cant be created nor destroyed but can be converted into another form of energy then an afterlife exists in this form.
But the first question remains, What is energy?
Energy is the potential to do useful work - nothing else.
It is important to realize that in physics today, we have no knowledge of what energy is. We do not have a picture that energy comes in little blobs of a definite amount. It is not that way. However, there are formulas for calculating some numerical quantity, and we add it all together it gives “28” - always the same number. It is an abstract thing in that it does not tell us the mechanism or the reasons for the various formulas.
Of all the physical concepts, that of energy is perhaps the most far-reaching. Everyone, whether a scientist or not, has an awareness of energy and what it means. Energy is what we have to pay for in order to get things done. The word itself may remain in the background, but we recognize that each gallon of gasoline, each Btu of heating gas, each kilowatt-hour of electricity, each car battery, the wherewithal for doing what we call work. We do not think in terms of paying for force, or acceleration, or momentum. Energy is the universal currency that exists in apparently countless denominations. The above remarks do not really define energy. No matter. It is worth recalling once more the opinion that H.A. Krammers expressed: “The most important and fruitful concepts are those to which it is impossible to attach a well-defined meaning.” The clue to the immense value of energy as a concept lies in its transformation. It is conserved – that is the point. Although we may not be able to define energy in general, that does not mean that it is only a vague, qualitative idea. We have set up quantitative measures of various specific kinds of energy: gravitational, electrical, magnetic, elastic, kinetic, and so on. And whenever a situation has arisen in which it seemed that energy disappeared, it has always been possible to recognize and define a new form of energy that permits us to save the conservation law. And conservation laws, as we remarked at the beginning of Chapter 9, represent one of the physicist’s most powerful tools for organizing his description of nature.
Pmb's analogy with a bookeeping scheme is a good one.
It is an abstract thing in that it does not tell us the mechanism or the reasons for the various formulas.
As far as energy not being the ability(capacity) to do work, I found an article online about this at http://www.loreto.unican.es/Carpeta2012/TPT(Lehrman)WorkEnergy.pdfIt seems like a nice article so far. I recommend reading it. It was published in The Physics Teacher under the title Energy is Not the Ability to do Work by Robert Lehrman, Phys. Teach. 11, 15 (1973) This article http://scienceblog.com/16727/is-energy-the-ability-to-do-work/ agrees with me too.
As far as energy not being the ability(capacity) to do work, I found an article online about this at http://www.loreto.unican.es/Carpeta2012/TPT(Lehrman)WorkEnergy.pdf
It seems it's not so much a question of energy being the capability to do work, but more of energy having the capability to do work.