Recent content by geordief

You assume too much.I have indeed learned those things and I realized on rereading that the "possibility" qualification was not yours(but did not consider it worth clarifying) I won't readdress the other points I made..That is for you to satisfy yourself with. Thread closed from my end.

Are you referring to entangled particles.. You said "A possible counter example is given by entangled particles" If that is what you meant I am sure you must be right but did did qualify your statement with "possibly" (although I was surely wrong) As for the rest of your reply I suggest you...

Not really.I don't know if you understand me to be trying to find some way around the UP(OK term?) I believe ,within the constraints of my crude understanding that the UP is entirely applicable in all circumstances. I also assume that it applies whether or not there is any kind of human or...

Do you mean ,"no that the quantum objects do not hold information that determine the outcome of the interaction" or that "no,that that information is subject to the Uncertainty Principle"? If you mean the former (and by extension the latter also) is my scenario not all encompassing and...

Thank you for the replies By "physical participant" I mean each of the physical objects that contribute to the interaction. Perhaps you understood me to imply some human or sentient involvement in the interaction? My use of the word "participant" may have been ill judged but I was not thinking...

I understand that the Uncertainty Principle is considered as embedded in Nature and is not to be considered as a simple limit on the capabilities of our experimental observations. Is there a sense (or is it true) whereby the physical participants in a quantum interaction hold...

So I take your (and,presumably eveyone else's) word that the tangent planes of a sphere (and presumably of any "uneven sphere" ) can be formulated solely from measurements on the sphere. That being so what relation do those tangent planes have to the sphere itself? They are not "on" the...

@A.T. Without recourse to parallel transport?

The intrinsic curvature of a 2d sphere is measured (as far as I can tell) by the means of its tangent planes that lie in the 3d dimensions it is embedded in.(I think parallel transport relies on these tangent planes) So "intrinsic seems to still rely on the embedding dimensions as far as I...

Very pleased if that is the case as I have been trying to understand this concept for the last 10 years. I wonder if I can now try to get my head around the Levi -Civita(sp?) connection (which may hopefully be connected to non orthogonal bases. that I was inquiring after in a separate and...

If the turret of the tank is attached to the body by a mount that uses 100% non friction ball bearings ** and we send the tank around on a path that does not follow a great circle on the sphere does the inertia of the mass of the turret cause it to point in a different direction to the...

In this video I can see a person walking around lines of curvature on a sphere with an arrow strapped to his waist. His task is to keep the arrow pointed in the same direction How does he do this ? Does he use a reference point like the stars? (that only move very slowly) If that is how he...

Thanks very much for those answers So a tool it is but non orthogonal axes do occur in real applications.(the crystals seem obvious now that it has been pointed out) Yes I am interested in relativistic physics but lack any expertise. Very much a talentless amateur 😀

Suppose ,instead of the usual x,y coordinate system with an I basis vector along the x -axis and a corresponding j basis vector along the y-axis we instead have a different pair of basis vectors ,call them e and f along their respective axes. I have seen that this is an important...

But Paul Brady is with few peers and that is one of his best. Here is a cover that really imo "misses the mark" ( BD really is the closest to an (artistic) "Human God" that I have known in my limited existence ) (I think Dylan is a fan of Brady)