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Robert Law
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Robert Law

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Robert Law's profile photoBobby Abraham's profile photoAlex Mandel's profile photo
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Paul is a bit off the wall on quite a large portion of his platform. The real irony with him is that of all candidates both Democratic and Republican, he has the most ideas that I agree with. As a leader in general, he doesn't really have it, I'm concerned that he doesn't really understand the realities of statecraft and diplomacy. What should be said, though, is we need a better spectrum from which to choose. In a land of color, we are always forced to choose between light-blue and baby-blue. Paul is like burnt-umber.
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Can someone more qualified comment on whether this is game-changing or not?
Exotic materials should lead to new ways of observing and playing with one of the strangest effects in physics, say Chinese physicists Metamaterials are exotic substances designed to steer electromagnetic waves in ways that are impossible with ordinary stuff. One of their more exciting properties is that they can bend light in a way that is mathematically equivalent to the way spacetime bends light. This formal equivalence means that metamateria...
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I am not sure what you mean by game-changing and I am not really a expert, but maybe I'll make some comments. First of all, my impression is that the Casimir effect is somewhat controversial, insofar as there are frequent disagreements on how to calculate it for different geometries. While the Casimir effect seems quite exotic, it may not be as esoteric a phenomenon as one might think. For example, a classical version of the same effect occurs between closely spaced ships with water waves replacing EM waves.

Also, at least according to one lecture I attended, one can treat the standard case of two parallel sheets of metal in two different ways. One is the Casimir way: EM fields with Dirichlet boundary conditions on the plates; long wavelengths cannot fit in between. The other way, is to model the constituent atoms and electrons of the plates and compute the van der Waals forces. According to the lecture I attended, one finds fairly convincing agreement between the two. This suggests that the Casimir calculation can be thought of as an effective (long wavelength/average) description.

It is this last point that is particularly relevant. Inside optical media, the propagation of light is altered on long wavelengths or in an effective description; however, at scales much smaller than the lattice spacing, the propagation returns to that of the vacuum. So I imagine that something similar could be said about the Casimir effect in this case.

In any case, I don't think anyone will ever be able to mine the vacuum, unless we are in a very long-lived metastable vacuum; in which case, it is decidedly ill-advised! Think Ice-9.
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The war turns inward.
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evan cohick's profile photoBrad Greer's profile photo
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It definitely gives me pause, but at the core, I feel like this is some of the smarter, more reasonable use of "military" resources. Because of the intel they got from the drone, they were able to avoid a much messier firefight. I'd rather have a drone fly over than the SWAT team go in guns blazing. Still, it's definitely something to keep an eye on. As the article rightly implied, when you make something accessible to police, they will take it far beyond the limits of reason (e.g. less lethal crowd control).
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Robert Law

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I'm being adopted by hippies! Signing the papers tomorrow.
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Robert Law's profile photoAlex Storer's profile photooliver hinds's profile photoevan cohick's profile photo
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Same people you were talking about before? This is great.
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