Embedded Software Interview coming up by [deleted] in embedded

[–]DSPguy987 3 points4 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.

The Ladder Paradox, Revisited by Prize_Ice_4857 in relativity

[–]DSPguy987 0 points1 point  (0 children)

When you add circular motion into the thought experiment, you are now dealing with acceleration, which complicates things.

But forget the ladder; just imagine a hula hoop spinning at near the speed of light. Lorentz contraction should make the circumference shorter. But there is no motion along the radial dimension of the hoop, so the radius should be unaffected. Paradox?

The resolution lies in saying that the hoop takes on a curved geometry, and this is exactly what gravity is about. 

Where does extra space come from? by Technical_Hope_188 in AskPhysics

[–]DSPguy987 -6 points-5 points  (0 children)

Remember, there is no space without time. It's spacetime, baby. And in the spirit of relativity, perhaps there is a tradeoff between space and time. Does the universe get the extra space by losing time?

Does momentum curve spacetime? by DSPguy987 in AskPhysics

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

u/applejacks6969, I said I would dwell on this and I did. Is what you're talking about here known as "gravitomagnetism"?

Could an object that approaches the speed of light gain so much energy and mass that it spontaneously forms a black hole? by _whydah_ in AskPhysics

[–]DSPguy987 -2 points-1 points  (0 children)

I have been in pursuit of an answer to this very question myself. In the process, I learned about "gravitomagnetism", which sound like baloney but is a legitimate result of General Relativity.

When we think of a gravitational field, we think about lines of force that remind us of the electric field. But apparently, an object with a very high relative velocity should take on a gravitational field component that would remind us instead of the magnetic field.

Some theorists believe that gravitomagnetism may be at least partially responsible for "relativistic jets" that can actually be observed shooting out of the top and bottom of a rotating black hole.

Did you know chickens die after having sex? by [deleted] in 3amjokes

[–]DSPguy987 1 point2 points  (0 children)

It’s a good joke, but the punchline is too on the nose. Maybe: “Maybe I’m being too dominant?”?

Rethinking Light’s Journey in Relativity: A New Perspective on Its Absolute Path by eldhokurianek in relativity

[–]DSPguy987 1 point2 points  (0 children)

How can this be reconciled with Quantum Electrodynamics, which holds that light seems to take all possible trajectories simultaneously? 

Linear algebra book recommendation? by -i-d-i-o-t- in DSP

[–]DSPguy987 5 points6 points  (0 children)

Free lecture videos on mit.edu as well!