On 2/8/2021 4:12 AM, Alan Grayson wrote:
On Monday, February 8, 2021 at 4:13:38 AM UTC-7 [email protected] wrote:
On Sun, Feb 7, 2021 at 7:25 PM Alan Grayson <[email protected]>
wrote:
>> A hydroelectric dam producing electricity and the
accelerating expansion of the universe caused by the
intrinsic energy of empty space, both convert negative
gravitational potential energy into positive kinetic
energy that can do work, in the first case by falling
inward and in the second case by falling outward. And I
explained previously to you exactly why that is so. And
that is no BS.
/> The flaw in your analysis is that the "negative" in PE is a
convention, not a law of physics./
Without that "convention" there would be no law of conservation of
energy at all.
/>There is no way to magically change negative energy (what
the hell is that?)/
I know a guy who can answer that question, ask Isaac Newton, he
knew what negative gravitational potential energy was over 300
years ago. Albert Einstein could also answer your question.
> to positive energy. AG
And tell that to the engineers who make hydroelectric dams.
/> You're just reaching a conclusion which pleases you about
total energy of the universe being exactly zero./
It's not just me, the idea that the total energy in the universe
is zeroalso pleased people like Stephen Hawkingand Richard Feynman
and Alan Guth who invented the idea of cosmic inflation. And the
evidence is piling up that it's probably true.
Zero-energy universe
<https://en.wikipedia.org/wiki/Zero-energy_universe>
/> You're just assuming the dark energy fills the gap, after
the total energy of what we can observe is estimated. And I
note that you never referenced dark energy or matter in your
original message./
That is flat out untrue, and as far as this argument is concerned
it makes no difference if the matter in the universe is composed
of Dark Matter or normaleveryday Baryonic Matter because gravity
treats both of them exactly the same way; and that's why Dark
Energy does not have the word "matter" in it, gravity treats it
differently. When a cloud of Baryonic Matter expands it does not
get more massive, but when a cloud of Dark Energy expands it does,
assuming that a property of space is for it to have a residual
energy, and it's looking increasingly likely that it does.
/> All I am really asserting is that we can just dispense with
the idea that a system can be in multiple different states
simultaneously,/
Sure you can dispense with that, if you don't mind ignoring
empirical evidence and abandoningthe scientific method in general.
*Consider a system with two possible states with probabilities 30% and
70% before measurement. I would agree that the system is in both
states simultaneously IF the probabilities were 100% for each. But
that violates one of the postulates of frequentist probability. So
which do you think is more logical; that in the 30%/70% case the
system is in both states simultaneously, or in neither state? AG
*
You don't seem to understand Hilbert space is just a special case of
vector spaces. If your state is having a momentum on a heading of
45deg, then it's a superposition of |North>+|East>. "Superposition" is
only relative to some basis. We right things that way when we have
instruments that measure "North" and "East", but none that measure NE.
Brent
*
*
*Concerning the convention for PE, if one moves a test mass from R1 to
R2 in a central gravity field, where R1 < R2, aren't we calculating
the work done against the field? Yes or No? We can call this work
negative or positive. Do you agree the choice is just a convention?
This cannot effect conservation of energy, which is an empirical
result, or what works in hydroelectric facility. AG*
John K Clark See what's on my new list at Extropolis
<https://groups.google.com/g/extropolis>
.
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