by crawler » Thu Apr 16, 2020 1:47 am
Physicists sometimes mention pure energy. What is pure energy?
https://www.forbes.com/sites/startswith ... 2b86c6762a
So the full answer to the question of whether pure energy exists is:
(1) For all of the particles that exist, massive and massless, energy is only one property of them, and cannot exist independently.
[This probably includes E=mcc, & includes the KE of a particle or body, & includes PE].
(2) For all of the situations where energy appears to be lost in a system, such as through gravitational decay, there exists some form of radiation carrying off that energy, leaving it conserved.
[Does this mean that (a) gravity waves have mass, & (b) electric fields have mass, & (c) magnetic fields have mass, & (d) other force fields, if they exist, have mass].
[Does PE belong in (1) or in (2). Perhaps PE due to gravity belongs in (1), & PE due to GWs belongs in (2)][Except that GWs do not exist].
(3) And that dark energy itself may be the purest form of energy, existing independent of particles, but as far as any effect other than the expansion of the Universe, that energy is inaccessible to everything else in the Universe.
[So, we cant use dark energy, ie it cant be felt as a force, in which case it cant be called energy].
As far as we can tell, energy is not something we can isolate in a laboratory, but only one of many properties that matter, antimatter and radiation all possess. Creating energy independent of particles? It might be something the Universe itself does, but until we learn how to create (or destroy) spacetime itself, we find ourselves unable to make it so.
[The universe does of course create energy (almost) independent of particles. This creation manifests as the sustaining of mass, ie the sustaining of the annihilation of aether. A kg of gold has an everlasting gravity field but it doesn’t lose mass. Likewise an electron has an everlasting charge. An electron has an everlasting orbit. A photon is everlasting. All quantum stuff (& energy) comes from (is created by) subquantum aether. However aether is not everlasting. And in the end (or before) neither is any quantum thing everlasting]. [Re creating or destroying spacetime, spacetime is merely a figment of Einstein's imagination].
It might be something the Universe itself does, but until we learn how to create (or destroy) spacetime itself, we find ourselves unable to make it so.
[I suppose that Einstein would add: (4) Spacetime can create forces (or would he call them pseudo-forces). Or he might prefer to say that (1) & (2) & perhaps (3) are manifestations of spacetime].
Anyhow, i reckon that mass cant be completely converted to (pure) energy (ie E=mcc aint true). Mass is bottled light (Jeans), ie confined photons (Williamson), & annihilation of say an electron (a confined photon) produces a free photon (or two), & free photons have mass. Free neutrinos are paired photons (if u were wondering). Confined neutrinos are dark matter (u should have been wondering).
Anyhow, mass cant be completely destroyed, all of the confined photons can only be converted to free photons, & free photons cant be destroyed, hencely E=mcc aint valid.
Mass is the property of annihilating aether. All quantum things have mass. But we know that a confined photon has millions of times the mass of a free photon. Williamson says that this is because the confined photon has a loop (a free photon doesn't have a loop). It’s a mystery. And protons are almost 2000 times as massive as electrons, Williamson says because protons have tighter loops than electrons, in which case protons might be bigger than electrons.
Anyhow, mass is lost when confined photons become free photons, but that loss will not be in accordance with E=mcc, ie even here that equation aint valid, it will be say 1/2 mcc, or perhaps some fraction of mccc, or something else.
Pure energy exists only as KE or PE. Hencely fission & fusion change PE to KE & vice versa. But KE & PE do not have mass.
Physicists sometimes mention pure energy. What is pure energy?
[i][color=#0000FF]https://www.forbes.com/sites/startswithabang/2017/03/25/ask-ethan-is-there-any-such-thing-as-pure-energy/#4f2b86c6762a
So the full answer to the question of whether pure energy exists is:
(1) For all of the particles that exist, massive and massless, energy is only one property of them, and cannot exist independently.[/color][/i]
[This probably includes E=mcc, & includes the KE of a particle or body, & includes PE].
[i][color=#0000FF](2) For all of the situations where energy appears to be lost in a system, such as through gravitational decay, there exists some form of radiation carrying off that energy, leaving it conserved.
[/color][/i][Does this mean that (a) gravity waves have mass, & (b) electric fields have mass, & (c) magnetic fields have mass, & (d) other force fields, if they exist, have mass].
[Does PE belong in (1) or in (2). Perhaps PE due to gravity belongs in (1), & PE due to GWs belongs in (2)][Except that GWs do not exist].
[i][color=#0000FF](3) And that dark energy itself may be the purest form of energy, existing independent of particles, but as far as any effect other than the expansion of the Universe, that energy is inaccessible to everything else in the Universe.
[/color][/i][So, we cant use dark energy, ie it cant be felt as a force, in which case it cant be called energy].
[i][color=#0000FF]As far as we can tell, energy is not something we can isolate in a laboratory, but only one of many properties that matter, antimatter and radiation all possess. Creating energy independent of particles? It might be something the Universe itself does, but until we learn how to create (or destroy) spacetime itself, we find ourselves unable to make it so.
[/color][/i][The universe does of course create energy (almost) independent of particles. This creation manifests as the sustaining of mass, ie the sustaining of the annihilation of aether. A kg of gold has an everlasting gravity field but it doesn’t lose mass. Likewise an electron has an everlasting charge. An electron has an everlasting orbit. A photon is everlasting. All quantum stuff (& energy) comes from (is created by) subquantum aether. However aether is not everlasting. And in the end (or before) neither is any quantum thing everlasting]. [Re creating or destroying spacetime, spacetime is merely a figment of Einstein's imagination].
[i][color=#0000FF]It might be something the Universe itself does, but until we learn how to create (or destroy) spacetime itself, we find ourselves unable to make it so.
[/color][/i][I suppose that Einstein would add: (4) Spacetime can create forces (or would he call them pseudo-forces). Or he might prefer to say that (1) & (2) & perhaps (3) are manifestations of spacetime].
Anyhow, i reckon that mass cant be completely converted to (pure) energy (ie E=mcc aint true). Mass is bottled light (Jeans), ie confined photons (Williamson), & annihilation of say an electron (a confined photon) produces a free photon (or two), & free photons have mass. Free neutrinos are paired photons (if u were wondering). Confined neutrinos are dark matter (u should have been wondering). [color=#BF0000]Anyhow, mass cant be completely destroyed, all of the confined photons can only be converted to free photons, & free photons cant be destroyed, hencely E=mcc aint valid.[/color]
Mass is the property of annihilating aether. All quantum things have mass. But we know that a confined photon has millions of times the mass of a free photon. Williamson says that this is because the confined photon has a loop (a free photon doesn't have a loop). It’s a mystery. And protons are almost 2000 times as massive as electrons, Williamson says because protons have tighter loops than electrons, in which case protons might be bigger than electrons. [color=#BF0000]Anyhow, mass is lost when confined photons become free photons, but that loss will not be in accordance with E=mcc, ie even here that equation aint valid, it will be say 1/2 mcc, or perhaps some fraction of mccc, or something else.
[/color]
Pure energy exists only as KE or PE. Hencely fission & fusion change PE to KE & vice versa. But KE & PE do not have mass.