Recent content by Nemoto

Thank you for your admonition: I am sorry for this failing, and will try harder. Richard Baxter, in his 1667 tract The Reasons of the Christian Religion, says: "And Schibler with others, maketh the difference of extension to be this, that Angels can contract their whole substance into one part...

"... there is not a definite line differentiating virtual particles from real particles; The equations of physics just describe particles (which includes both equally). The amplitude that a virtual particle exists interferes with the amplitude for its non-existence; whereas for a real particle...

Thank you, this answer is very helpful, in that it explains why I am having difficulty understanding this.

I am confused because of statements like this one, from Wikipedia, under the heading "Point Particle": "For example, for the electron, experimental evidence shows that the size of an electron is less than 10−18 m.[6] This is consistent with the expected value of exactly zero. (This should not be...

I have read that the elementary particles of the Standard Model have dimensions 0. Is this the case or not? I have read on this site relevant answers to similar questions, but have not found them to be very clear. If it is the case, surely much of quantum weirdness is thereby explained: after...

Thank you, this link is most interesting. I love the animations as they really help me to understand better.

Looking at the first site you have cited, I see that the page is secondary to one on acceleration with alternating electric and magnetic fields. It is true that electric and magnetic fields are perpendicular to each other. After this are discussed oscillations and properties of periodic harmonic...

I am sorry, but I do not quite understand this. What sort of wave oscillates up and down and why? Why does it then move in a perpendicular direction? Waves propagate at different speeds through different media due to the absorption of energy. This is why waves caused by a dropped pebble...

This question has already been addressed here: https://www.physicsforums.com/threads/wavelength-and-penetration.350432/ The answers given are very technical, however, and I am not as clever as many here, so I am very prepared to be corrected if I am wrong. Some years ago, I read Richard...

I am much less knowledgeable than many on this site, so if I have got anything about my answer wrong, I hope someone else will correct it. Here is my take on it: If a pebble is dropped into a pond, waves will propagate outwards due to the displacement of the water at the point of impact...

Thank you, I have been enjoying browsing around the site very much.

Thank you for allowing me to join Physics Forums. My understanding of physics is somewhat naive, although I do have an undergraduate degree in Environmental Science and Technology. (That and Geology were the only science degrees available in the county at that time, and I had to live at home for...