Recent content by Aaron Crowl

I think you have that backwards. A balanced transmission line has two conductors. The fields are tightly bound when you have two conductors running in parallel. An unbalanced transmission line uses one conductor. The unbalanced transmission line uses the environment as a ground so the field is...

That's an excellent point I hadn't thought of that. The issue I see coming up is how loud the engines would be at takeoff power. Major airports have a kind of budget for noise levels which they cannot go above. I think we would agree that a supersonic capable engine will tend to be loud at max...

Angry communities could torpedo a billion dollar project if it's too loud. Sorry, I forgot to actually make that point. Noise is high on the priority list in the aerospace industry. It's risky to invest big bucks into a design if airports will not receive your aircraft. The bright side of this...

One of the main problems with the Concorde was simply the noise. A colleague told me stories about working at La Guardia. He told me that a hangar a mile away from the takeoff of a Concorde would shake and rattle. That had to be so inefficient. I always wondered if anyone in the supersonic...

The field won't be rotating like it would in an AC motor. The commutator keeps the field going in same direction by flipping the current in the coils. The field may "twitch" a bit as the motor spins and the current flips. Maybe if you position your sensor where the stator poles split you could...

Have a look at Ulaby's book "Fundamentals of Applied Electromagnetics". It teaches EM theory from a engineering perspective. It includes a chapter on vector analysis (divergence, gradient, curl, laplacian). It's an interesting book. Instead of putting theory first it begins with practical...

You sound a little discouraged here. Don't be. From your earlier posts it sounded you had an idea for applying neural networks to some problem. That's a patentable idea. If it's something good then it can be monetized. You don't necessarily have to make the neural network hardware for this to be...

It sounds like you have an interesting problem. I'd like to help but I'm afraid I don't know anything about neural networks. I do know a thing or two about digital design. It is possible that something exists which you can buy off the shelf and use. When someone says "computationally...

Out of curiosity, why do you not want to create a digital design? You could even do this completely with software in a general purpose computer.

There is only one thing that I can think of which will do what you want. Take a look at the memristor. Unfortunately it's cutting edge stuff that isn't available yet.

It's entirely possible that you are the one with the charge. Do you wear wool clothing and rubber soled shoes? You could be picking up charge just from walking around. When you approach the rod the charges on your body will try to escape you and go to ground. The l-rod is innocent. This is all...

It isn't that simple because light comes in discreet packets of energy called photons. Some great physicists noted that if light was simply created by oscillating charges then electrons in orbit around atoms would constantly lose their energy and fall inward. Charged particles are small things...

You seem to be getting this concept so that's a good start. Modeling what happens when nearly-rigid bodies collide could become complex very quickly. For that matter, modeling elastic collisions would be difficult too. Let's try a simple approach first. When two objects collide shock-waves...

The sound you hear from a collision represents a substantial amount of energy. Consider this: The sound radiated out from the collision in all directions. Your ears only picked up a small fraction of that sound energy at some distance. What was your figure for lost energy?

Aether theory had some specific properties. Namely it was thought of as some kind of substance that light waves could propagate through. The aether was supposed to permeate the universe and have an inertial reference frame. They even created a sophisticated experiment to detect the Earth's...