Linked Questions

1
vote
1answer
480 views
0
votes
0answers
139 views

Are there any real ways at least in theory to manipulate quantum vacuum for propulsion or energy generation? [duplicate]

https://patents.google.com/patent/US10144532B2/en US Navy was granted a patent for polarised vacuum propulsion using microwave radiation and high em energy resonating cavities. It seems to be a ...
0
votes
0answers
35 views

Query about approaches to extract energy out of Quantum Vacuum Fluctuations [duplicate]

Are we aware of any theoretically sound approach that would potentially allow us to extract energy out of the Quantum Vacuum Fluctuations indefinitely. The magnitude of the energy extracted doesn't ...
55
votes
13answers
17k views

Why is cold fusion considered bogus?

Cold fusion is being mentioned a lot lately because of some new setup that apparently works. This is an unverified claim. See for example: http://hardware.slashdot.org/story/11/01/24/1550205/Italian-...
20
votes
6answers
9k views

Can one obtain free energy from the vacuum?

It is known that from the vacuum of a quantum field theory, virtual particle pairs are created and destroyed; is it possible to capture these particles thus obtaining free energy from the vacuum?
20
votes
2answers
4k views

Are we living in a false vacuum? Is there any way to tell?

I was thinking of the noted 1980 paper by Sidney Coleman and Frank de Luccia--"Gravitational effects of and on vacuum decay"-- about metastable vacuum states that could tunnel to a lower energy "true ...
-5
votes
4answers
7k views

Is the Keppe Motor “real”?

Its makers say that it's a highly efficient motor because it resonates with (what they call) "Essential Energy", which is free energy that is everywhere in space. (I think that’s just a different name ...
16
votes
1answer
1k views

dynamic casimir effect

A few years ago, when i studied the casimir effect interpretation as the filtering out of vacuum modes with appropiate boundary conditions, i had the following dilemma; supposedly the derivation of ...
5
votes
3answers
1k views

Vacuum energy and perpetual motion

The part of the Einstein equations of general relativity referred to vacuum energy, introduce a repulsive term in gravity. This means that as the space become bigger and bigger, vacuum part become ...
11
votes
1answer
671 views

How does dynamic casimir effect generate correlated photons?

There is a recent paper on arxiv receiving lot of acclaim http://arxiv.org/abs/1105.4714 The authors experimentally show that moving a mirror of a cavity at high speeds produces light from high ...
1
vote
2answers
283 views

Can we make usable energy from subnuclear particles?

I understand mass and energy are the same, but in this question I will be talking about mass being turned into usable energy (electricity/heat/etc). We can make our energy through chemical reactions ...
6
votes
1answer
368 views

What do we know of superconductivity in thin layers?

motivated by another question, i wonder if there are special properties of superconductivity when restricted on 2D or very thin layers related to the effective permittivity in function of the ...
-1
votes
2answers
788 views

Can we view quantum fluctuations as a type of quantum power?

(Note: I will let the question stand as is, it has generated a good answer, but the question is too "wishy washy" and needs to be tighter.) We know that the uncertainty principle tells us that the ...
4
votes
1answer
302 views

Vacuum energy extraction: What happens to the cosmological constant?

If the vacuum energy is extracted, then what will happen to the cosmological constant? Will it remain the same? .
1
vote
1answer
206 views

Aside from Noether's theorem, what other concepts would explain energy conservation?

Energy is defined more in the mathematical sense, and tends to show true with observations in the physical world. But why is energy conserved aside from "Noether's theorem"? In a closed system that ...

15 30 50 per page