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I like physics.


Jun
25
reviewed Approve Positive energies
Jun
25
reviewed Approve Deriving differential equation of a cart moved by a motor
Jun
23
revised Layman's explanation of the mysterious occurrence of quantum tunneling?
typo fix
Jun
23
revised Layman's explanation of the mysterious occurrence of quantum tunneling?
typo fixes & added a clarifying sentence
Jun
23
reviewed Leave Open What is the safest distance to create a star?
Jun
23
comment What is the safest distance to create a star?
It's going to depend on a lot of issues, including time span, since over enough time even distant stars can rumble by way too close. We live in a region sparse enough to make a few billion years of safety plausible.
Jun
23
reviewed Leave Open Is a larger, heated space easier or harder to ventilate if the heat source and ventilation are the same?
Jun
23
comment Is a larger, heated space easier or harder to ventilate if the heat source and ventilation are the same?
You know, the more I looked at this, the more I realized it was more complex than I first thought. It requires setting several parameters and making some assumptions. I'd be curious to see how folks analyze it.
Jun
23
reviewed Leave Open How is quantization related to commutation?
Jun
23
reviewed Leave Open Non-Linear O.D.E
Jun
23
reviewed Close What is the recent most important discovery and study about magnets?
Jun
23
comment What is the recent most important discovery and study about magnets?
Sohaib, you need to be more specific, even for an opinion. The most important "recent" event for magnetism itself was Ironside's conversion of Maxwell's equations into their current form, which pretty much closed the book on how magnetism works. Given that, is your question about new magnetic materials, or new designs, or what? You might even want to consider asking over at Chemistry SE if your real question is about interesting events in magnetic materials.
Jun
23
reviewed Leave Open Is the Universe being dragged into a singularity rather than expanding?
Jun
23
reviewed Close Barrier potential for germanium, silicon and gallium arsenide
Jun
23
comment What is known about Renyi entropy of a probability density function?
Larry, the reference is good, but can you try to summarize the relevant answer rather than just giving a reference?
Jun
23
answered Layman's explanation of the mysterious occurrence of quantum tunneling?
Jun
21
comment Layman's explanation of the mysterious occurrence of quantum tunneling?
The problem, really, is that you just asked and extremely hard simple question. Tunneling is usually just explained in terms of the precisely defined tunneling probabilities, which certainly works, but is unsatisfying. Part of the problem is there is no good analogy to the quantum concept of a "very high but very thin energy barrier." It sounds too much like a high-lipped cup made of steel, and we know very well that marbles don't just "tunnel" through such constructs. So: The classical analogy, whatever it may be, is not that. It's something a bit different. So again: Good question.
Jun
21
comment Layman's explanation of the mysterious occurrence of quantum tunneling?
Hi HyperLuminal: Well, politically speaking, I suspect your question might have been more warmly received if you had not stuck that "Bah" in the middle of it... :) However, it's a good question. If Feynman spent an entire book (QED) to explain the most abstract and mathematically precise of all quantum theories, QED, in completely non-math terms, I would think that surely tunneling is also fair gain. You need math for precision, sure, but as in the QED case, the most fundamental principles of physics usually have a certain simplicity to them that enables non-math explanations.
Jun
21
reviewed Leave Open Layman's explanation of the mysterious occurrence of quantum tunneling?
Jun
21
revised Quantum mechanics and everyday nature
Minor typo.