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terminology - What is pure energy? - Physics Stack Exchange 0 I think pure energy refers to energy existing without matter Energy is usually regarded as a property of an object Light, having no mass, could then be regarded as pure energy The energy is conserved in the form of momentum When a photon strikes an atom it gains energy, nothing else and the photon ceases to exist
What is pure energy in matter-antimatter annihilation made of? A virtual graviton or their pair would also be "pure energy" "Pure energy" is meant to have the property that it's not hard for other objects to absorb it (or emit it) without changing their character qualitatively It's like the energy in the sugars or chocolate that you may quickly transform to the energy to run An extra proton in the state
What (if any) state did energy exist in prior to the big bang? 2 "but is there any conception of what energy was like prior to the big bang?" If one defines the big bang as the 'beginning' of spacetime, then this question doesn't make sense However, if one considers the big bang as something else (e g , Penrose's CCC), then talk of 'prior to big bang' may have meaning – Alfred Centauri
What would be pure energy ?An example of pure energy? Pure energy can be the light because it has no mass – Energizer777 Nov 7, 2015 at 19:34 @Energizer777 Nope Not even close Light is electric and magnetic fields The basic problem with this kind of question is that "energy" isn't a thing, it's a property – dmckee --- ex-moderator kitten Nov 7, 2015 at 22:53
How is it possible photons have no mass but have energy? Two kind of things can happen with photons If an atom makes transition from higher energy to lower energy, in the process, atoms energy will be decreased and photon will be created (emitted) An atom from lower energy state, can 'absorb' photon and go to higher energy In that process, photon will vanish, we say atom absorbed it
mass - What is Energy made of? - Physics Stack Exchange mr = E c2 m r = E c 2 or equivalently mr = γ ×m0 m r = γ × m 0 where m0 m 0 is called the rest mass of a particle or a system and is an invariant quantity under four dimensional transformations, characterizing the Energy_momentum four vector of the system m20 =E2 −p2 m 0 2 = E 2 − p 2 where E E is the total energy of a system of
What do we mean by saying light is a form of energy? Given amount of physical rest mass,- how much pure energy you can convert from it, is given by Einstein famous eq: $$ E=mc^2 $$ or if expressed in terms of amount of massless photon particles: $$ n = \frac {mc^2}{h\nu} $$ But again, this explanation is subjective and I doubt if objective one exists in your question
How do we calculate the amount of mass converted into pure energy when . . . $\begingroup$ @Scarlett the only way mass is converted into energy is when it is destroyed or annhilated This happens in a nuclear reaction In those reactions, if you weigh the mass before and after, they won't be the same This difference in mass gives rise to energy This destruction of mass serves as the source of energy $\endgroup$
Which was first, energy or matter in the creation of our universe? Where did this Energy come from? Energy requires matter or something to manifest itself Light requires photons, electricity requires electrons etc What is this something What if there was a Field that had information in it That field went through some transformation that resulted in matter from which came Energy
How much energy could a human body be converted into? Well, if the entirety of a human body were converted to energy, how much energy would be created and how much damage would be done matter displaced? I've tried to figure out how much energy the human body would become if the mass were converted to energy and came up with about 3 24 x 10^{35} J (for an 80 kg male) IF I did the maths right