Ok. But from my perspective is there theoretically any point where I can say that he's crossed the event horizon? Forget some radar. Let's just say he's falling in with a flashlight pointed at me. Won't I just see that light become more and more red shifted but never disappear? Because from my...
As I understand things if you're hanging out in your space suit some distance away from a black holes event horizon and your buddy decides to dive on in you will never see him cross the event horizon. You'll see him approach the event horizon but never cross it. It would seem the time needed to...
I was rolling my eyes but then I saw this. Is this actually right? It seems reasonable. I kind of just assumed really understanding how a magnetic field works would be more complicated than this
So my neighbor is interested in electricity and magnetism. Well he's actually been watching youtube videos and thinks he can make some kind of free energy device. But anyways I thought it could be fun to do some real projects with him like playing with magnets, making a diy DC generator, and...
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Well at least I know now where the conceptual understanding for the Pauli exclusion principle would be found. Not nearly as satisfying as the answer I was hoping for. Can't help but think of that Oscar Wilde quote "The pure and simple truth is rarely pure and never simple"
Ok, I'm a little hesitant to post in the quantum physics forum here because I don't want anyone to make the mistake that I know much about quantum physics :biggrin:
But anyways I've been reading some bits lately about electricity and magnetism trying to understand why permanent magnets work the...
Thanks for this reply. When I was thinking of this at first maybe I was thinking about 'reactivity' being synonymous with how many bonds and element can form. But now that I think about it another way of thinking about 'reactivity' could be how easily an element forms a bond which I think...
Trying to remember some chemistry here and think I must me remembering something wrong. I'm remembering that the more unpaired electrons in an atom the more reactive it is, or the more bonds it can form. So hydrogen is reactive ie 1 unpaired electron in the 1s orbital. Helium is stable 2 paired...
I got a wiggle!!!! LOL It's not much but it's definitely there! Turns out I was moving the magnet on the wrong side of the coil. Thanks for the tips @Tom.G and @Baluncore ! And all the extra info too. I didn't know a ring shaped magnet could be any other way than just having each face be...
Playing around with electricity and magnetism. Well, trying to anyways. Wound some wire up and down the length of a 4" screw several times. Thought when I spun the magnet close to the coil I would get a detectable amount of current on my voltmeter. Anyone know why I'm not reading anything? I...