HDF is redshifted because of the expansion of the Universe, right? Thats why we can use it to see what galaxies look like billions of years ago. Its not ISWE redshift...
Thanks for the links; I actually do understand why the effect exists, and its great that we've observed light blueshifted by Earth's gravitational potential well, but that wasn't the question.
If you check this link out here...
I learned about the Sachs-Wolfe Effect when I was discussing the CMB, since it is a major artifact of it.
I do have one very basic question: Is the CMB the only place we observe the effect, or do we see it every day in other places?
I suppose the way to look for it would be to try to place a...
Ok awesome, thanks for clarifying that...I had suspected as much, but was worried that if I out and said it, someone would bite my head off for being wrong, so I phrased it as a question. My head takes time to regrow :)
At first glance, it seems that, no, a stationary electron would not have a magnetic field associated with it, since we know that fields arise because of moving charges.
However, if I understand the current description of the electron, it has an inherent quantum property called spin. This is...
Hello, thanks for your very informative post! I do have one more question that I think wasn't answered -- I think, if I understand the current description of the electron, that it has an inherent property called spin. This is nothing like what we normally think of, as in the spinning of a...
I agree...
Again nothing I disagree with.
I'm quite sure that you did not, since you were very clear in your point about particles not rotating...something I agree with, and my point was spiral or circular motion when perpendicular to a field, not physical rotation of the particle. I blame...
Well this is what I'm guessing...its a known fact that charged particles undergo spiraling patterns (if they were originally moving in a straight line) or simply circular patterns (if they were holding still) when they are in the presence of a uniform magnetic field. No one disputes this, like I...
All charged particles spiral in a clockwise or counter-clockwise direction, when in the presence of an external magnetic field. This was one of the first things I was taught, and is the fundamental principle of mass spectrometers. You must have not understood my question.
Thanks, I agree!
To quote my physics book from my course from a few years ago:
"A current-carrying loop experiences no net force in a uniform magnetic field, but it does experience a net torque. The orientation of the loop can be described conveniently by a unit vector n that is normal to the...
Maybe I phrased this wrong for you. If two magnetic fields were at right angles to each other, would they feel mutual forces towards making them parallel? (Put two bar magnets at right angles near each other.)
Thanks but nevermind, I figured out my own problem. If the axis of the electron or proton was not parallel to the exterior magnetic field, the magnetic field of the particle would feel a correcting force that would swing it around to make it parallel...and once it was, there would be no more...
Hi, just reviewing some of my physics material, and realized I had a question that has never been answered for me.
I know that charged particles, traveling parallel to a magnetic field, feel no force either forwards or backwards, but feel a force perpendicular that causes them to spiral...
Tongue in check, I'm never serious when I joke, my friend. And you have every right to redefine your stance, there are many mysterious things in this Universe, part of why I love learning. Thanks to all who contributed to this thread, I've learned allot and will continue to do so with the...