Recent content by sophiecentaur

And why? It's because Fields are vectors and have direction so, in the end you'd need to consider the actual route of connecting wires and positions of components in your calculations. Using Potential (Volts) you are only concerned with the way the Electrical Potential Energy changes around the...

There are also variations for making love; one such is standing up in a hammock (so I've heard) but the increased necessary skill could interfere with the enjoyment for most of us mortals. There will be many good players who could give your chess machine a hard time but human-human games are...

Yes. That's correct. The resistance of the supply wires is set by the material (copper, mostly) and the dimensions. So far so good. You mention Ohm's Law but that law only applies to ideal conductors like metals. An LED is far from ohmic so all the basic calculations you can do when adding...

This is a great example of 'human nature' spoiling the fun. What goes on at the top of a pastime is hardly at all relevant to the enjoyment of the 99.9% of participants. Now we can buy a 3D Printer for the home, should that impinge on our enjoyment from 'whittling' and our pottery classes? AI...

This is very relevant. It's the basis of the use of multistage rockets. If you want to get a 'long way' from theSun, then the same principle should apply; a first stage, massive vehicle to take a smaller vehicle way out - well beyond the planets and to kick the smaller hehicle even further with...

You must be like me about getting up. That part of the day just doesn't exist for me. My Astronomer chums stay up for sunrise events; incredible.

The things that people just don't know are amazing. But that goes for all of us. I keep having to remind myself not to be smug about it - 'cos my subset of non-knowledge is huge.

People who were taught Latin by Mr Jones, and others The 1950s was great for a wide education (and a sore backside).

As they say: "Equinox - it's a nightmare"

When trying to use an analogy to explain something then it is important that the analogy is valid. Ohm's Law states that the ratio of V/I is constant for a metal at constant temperature. That ratio is referred to as the Resistance. Merely quoting the ratio of volts to current in any old...

Momentum is frame dependent; the velocity is relative to a reference velocity. Your "rest" is not a particularly special situation (to a Physicist). Mass is not frame dependent. Mass and Inertia are pretty much in the same neck of the woods and the use of the words depends on the context and...

That's a 'very healthy' way of putting it. People often want to imply 'that's the real explanation" but often many models lead to the same experimental prediction. The nice thing about the Lorentz explanation is that it seems to catch the fancy of a lot of students as it uses an unexpected link...

How would the dielectric constant change? It's a property of the dielectric. If the answers you are getting are not what you expected then doesn't it just indicate that the simple formula you are using for Capacity makes assumptions and works best for capacitors with a large area. In the case of...

I seem to remember that the coupling coefficient of a coupler is based on the ratio of balanced and unbalanced impedances (for strip line or micro strip ) and wouldn't you assume the presence of a ground plane or planes - in order to contain the signals and control crosstalk (to define the...

I guess it's necessary to have actually used the idea of a Foch state in a real study so you can get familiar with it. That comment helps a bit - cheers.