Recent content by alw34

If you match the light power to the battery power, say, as is routinely done in a flashlight, and have secure electrical connections, over heating should not be a problem. You'll also have to decide when the battery is 'dead' because as you know a light will gradually get dimmer and dimmer. In...

I'm not so sure most of us can add much of anything useful. Liberals will likely think the Justice Department is not going far enough, conservatives will likely think Justice is overreaching by far. For example, Mayor DeBlasio and former Mayor Giuliani of NYC would likely see the situation...

exactly...that's been the issue for the last half dozen or more posts...

Hard to tell exactly what that means, but it sure seems early 1900's classical inertia and Einstein's new gravitational mass are different. For one, the latter 'phenomena' does not operate instantaneously. Is acceleration as geodesic deviation in GR 'identical' to classical acceleration? As...

oops...I think you mean sitting in my seat I should see Unruh radiation...of course, you are right...thanks but, that first 'quote' is not mine, but the op...for unknown reasons I could not obtain a 'reply' caption...

So with the previous posts, you should now be able to see the above is not necessarily 'the same' but some effects may be similar. Also, the Unruh effect is an accepted phenomena in the accelerating elevator but not the 'at rest' case.

Why do we realize that we are moving when we are in an accelerated frame of reference? Where you 'accelerate but do not move' is sitting in your chair reading this. You feel a force pushing against your backside, hence you are accelerating.

Roughly speaking, with caveats, ok. The original equivalence principle, as described by Einstein, concluded that free-fall and inertial motion were physically equivalent. But our understanding has improved over time and so there are several versions of the 'equivalence principle'. Several are...

unlikely. best to give actual quotes so we know what your reference is. 'Little angles' are angles, not vectors, right? For one thing an angle is usually not referenced to a coordinate frame of reference, like a graph plot. Vectors have direction because they have a specific direction with...

A scalar has magnitude only, such as temperatures at different points in a room. A vector has not only magnitude but direction, say the flow of water during the draining of a bath tub. So if I want to give you directions from you to me, saying I am five miles away [magnitude] is not enough; I...

Where did you get a description of the bulb increasing in brightness?? What do you see as the final steady state circuit condition? I see the light out and all the current flowing through the inductor, a near short. As you posted, inductance opposes any CHANGE in current flow. But in a steady...

Glad you posted that. made me realize my post was incomplete, inadequate: Instead of just understanding the action of the drug molecule, I'd sure like them to know the answer to this question: "What went wrong in Alw34's DNA to make such a drug therapy necessary?" In other words, root cause...

maybe, but isn't it still the case that we don't know the origin, the cause, of the Big Bang?

I think I picked up this link from a discussion here in physics forums. http://www.nature.com/news/not-quite-so-elementary-my-dear-electron-1.10471 Not-quite-so elementary, my dear electron 4/2012 Fundamental particle ‘splits’ into quasiparticles, including the new ‘orbiton’. "...Isolated...

I recognize that as a widespread, perhaps even almost universal perspective. But such a view of "What particles are", I think, and its a personal opinion, short changes physics. I happen to think we can do better. It's as if medical researchers were satisfied that a certain drug 'cures' certain...