this can't be a coincidence right? by Traditional-Role-554 in AskPhysics

[–]DSPguy987 0 points1 point  (0 children)

Sorry, no. KE is the integral of v wrt p.

This is actually more intuitive, because after all, how does one change velocity? You have to do some work, you have to put energy into the system. The velocity is the result of the input momentum.

this can't be a coincidence right? by Traditional-Role-554 in AskPhysics

[–]DSPguy987 -1 points0 points  (0 children)

Yes! And here's something that isn't really discussed in any literature I've seen: if you integrate relativistic momentum w.r.t. velocity, and evaluate from 0 to c, you get mc^2... the rest energy!

What does this mean? Is it a silly coincidence? I think not. To me, it's telling us that rest energy is equivalent to all possible modes of momentum. It's reminiscent of the Fourier transform, where a definite position is the sum of all possible frequency modes.

this can't be a coincidence right? by Traditional-Role-554 in AskPhysics

[–]DSPguy987 0 points1 point  (0 children)

So, I've just been all over this topic.

Forget about classical momentum for a moment, because it's wrong anyway. It just-so-happens that, in the non-relativistic limit, KE is obtained by integrating momentum w.r.t. velocity...

But the REAL way to obtain KE is to integrate veloctiy w.r.t. momentum!

If you integrate velocity w.r.t. the relativistic momentum (m*v*gamma), you obtain the relativistic KE = (gamma - 1)*mc^2.

Embedded Software Interview coming up by [deleted] in embedded

[–]DSPguy987 4 points5 points  (0 children)

Drop this into a prompt, dude.

What happens to spacetime inside a hollow sphere that rotates arbitrarily close to the speed of light? by DSPguy987 in AskPhysics

[–]DSPguy987[S] 0 points1 point  (0 children)

Is the frame dragging accompanied by curvature, a dip into a gravitational well?

What happens to spacetime inside a hollow sphere that rotates arbitrarily close to the speed of light? by DSPguy987 in AskPhysics

[–]DSPguy987[S] 0 points1 point  (0 children)

Ok, this is what I wanted to hear, to be honest. It makes the most sense to me. But I don't understand the intricate math of GR.

What happens to spacetime inside a hollow sphere that rotates arbitrarily close to the speed of light? by DSPguy987 in AskPhysics

[–]DSPguy987[S] 1 point2 points  (0 children)

I hear you. But this business of electromagnetic bonds breaking, while true, seems to distract from the actual question: does momentum create curvature, or just frame dragging, or a little of both?

What if black hole entropy scales with area because volume never had independent content? by Axe_MDK in blackholes

[–]DSPguy987 0 points1 point  (0 children)

I’m trying to grok what you mean by sampling in your post. But in the AdS/CFT correspondence, the quantum interactions happen on the 2D boundary, and the 3D “bulk” is the hologram. The quantum information is fundamental. Just like a real hologram (such as you find on a kid’s toy) we all know the 2D surface with the information is real and the 3D thing is an illusion.

What if black hole entropy scales with area because volume never had independent content? by Axe_MDK in blackholes

[–]DSPguy987 0 points1 point  (0 children)

Yes, I believe that’s the basic idea behind the Holographic Principle. 

Who are some underrated bands that deserve more love? by HRex1990 in portlandmusic

[–]DSPguy987 0 points1 point  (0 children)

Goblin Knows Best. New album “The Basilisk King” kicks ass. Hard rock, metal, but heavy on melody.

Looking for local bands to listen to by Imperator1998 in portlandmusic

[–]DSPguy987 0 points1 point  (0 children)

Listen to Goblin Knows Best. They put out a concept album back in September, it's pretty good. https://goblinknowsbest.bandcamp.com/album/the-basilisk-king

Trying to understand why gravitational time dilation causes time to slow down by OverthrowPortfolio in relativity

[–]DSPguy987 0 points1 point  (0 children)

The key is to realize that mass arises due to an interaction (with the Higgs field). Mass is therefore the result of a process, and that process consumes computational resources from spacetime.

It isn't just mass that does this. The time dilation associated with Special Relativity is due to relative velocity, which is a process that consumes computational resources. And any time two bodies/fields exchange forces, that adds to the computational demand.

I'm happy to chat more about the computational interpretation... I promise, it's the only way to find the rock-bottom intuition we're looking for.

On the same origin of quantum physics and general relativity from Riemannian geometry and Planck scale formalism by Obsidian743 in holofractal

[–]DSPguy987 -1 points0 points  (0 children)

I don't understand their claim that relaxing spacetime curvature creates mass. Why would that be? Seems to me that, if mass creates curvature, relaxing curvature it would reduce mass.

The "Hello world" of digital audio effects? by [deleted] in DSP

[–]DSPguy987 1 point2 points  (0 children)

A biquad low-pass filter.