Recent content by amenhotep

Your answer seems to be implying that things don't move along the direction of the force because there's something blocking it. I already know that it is possible to move in directions other than that of a vector field as long as you can provide the necessary forces to do so. What I'm trying to...

Would you mind explaining more of this because I seem to have this idea engraved in my head. I always seem to be thinking that a vector field is the same as the direction field of an ordinary differential equations. I always think that things will move in the direction of the force. If you push...

Hello, I'm having problems understanding what exactly is meant by a conservative vector field. So, allow me to explain how I currently understand it. Let \overrightarrow{F} be some sort of a vector field that is conservative. The stream plot of \overrightarrow{F} is shown below. From my...

But why is the pn junction called the depletion region. Doesn't that mean there are no carriers available which implies that pn junction is behaving like an insulator ? An insulator should be a material with no free carriers.

Hello, Capacitor When a capacitor is connected to a voltage source, electrons will move from one plate and accumulate in the other in accordance to Q=CV. Due to the imbalance of charges (positive and negative ions) between the plates, an electric field exists that flow in the direction of the...

Hello, I've been reading a book on particle physics for the general audience, and as you might expect, I was left with a slew of nagging unanswered questions. There was a chapter on gauge symmetry where the author described that the weak and the EM forces are the same force at some energy...

Hello, I've been self studying computer architecture and I'm also familiar with digital electronics. I was thinking of getting an actual microcontroller and try to commit all the material that I'm learning by actually playing with a real microcontroller. Obviously PIC and AVR are among the most...

Hi, [My Problem] I got a bachelors in Electrical Engineering about 2 years ago and since then I've just been floating around like an unguided wave. A major problem of mine is deciding what to pursue next. I am undoubtedly going to continue my education but not very sure what is exactly I should...

Hello, I've been thinking about what exactly is the doppler effect and I'm not sure I understand it because I thought it meant a change in frequency due to relative motion while at the same time its defined in terms of changing wavelength such as in red shift or blue shift. Case 1 The...

There are two ways to study calculus: 1. Learn how to use it as a tool 2. Convince yourself why things are so by doing proofs Usually the first option is the easiest. But the deeper you get into Maths the more you'll realize the value of the second option. In case you're not familiar with...

Hello, I've always been interested in space and space flights and have often wondered how rockets are lunched into space, how their trajectories are defined, how they are sped up (like gravity assist), how they are slowed down (like the complicated trajectory of the Rosetta mission etc . . . I...

Hello, I've been reading astronomy books for some time now but after leaving things for a while I seem to forget rotation directions. For example, I know that the Earth spins in the anticlockwise direction. That is easy to see why. They say that motion of the Earth is eastwards. Because of the...

Hello, I hope this post wouldn't be considered spamming because I am genuinely trying to get the insight of others about using pirated software. Let's consider this scenario which applies to lots of people at one time: 1. You live in Africa, well below poverty level 2. You attend university on...

Good day, I was born in the 90s and as you know, having calculators back then was a cool thing; like having the Game Boy, SNES or the Genesis. I was very fond of calculators and I still am and from time to time check out what's new on the market. To say the truth, I still use may CASIO FX-115 to...

Hello, I'm already done with undergraduate Electrical Engineering and was quite disappointed not to have studied Quantum Mechanics. I have some free time now and would like to know whether its possible to get a good grasp of the subject the same way physicists do. I'm not talking about popular...