Recent content by sai_2008

Well, in GSM you have a 200KHz channel in one of the GSM bands, assigned to a user/mobile. So if you are measuring at the mobile, then whatever enters the 200KHz channel contributes to RSSI - interference, jammer signals, the actual signal that you are supposed to receive, etc. When you measure...

All you are saying is: - There is a very very small mass M close to 0.0 - Oh by the way it is accelerating...at a Therefore if F=Ma, then F is close to 0.0...! So what about it?? For a very very small mass M, it does not take much force to create an acceleration a :) ...so can't you you...

Hmm..while I won't repeat what you can find in a good physics textbook regarding flux, just to point out, with current there is a "time aspect" to it - not just area: the amount or charge that traverses per second across any surface is the current... so the current is not a charge flux in that...

Animals usually have a very sensitive peripheral vision, so they can detect slightest of movements in the environment. (Their color vision may not be as high-tech as humans, although humans don't have that good a peripheral vision). I suspect that if that deer noticed any other thing that moved...

Ah..! In a medium! Not "everywhere"...never mind.

The motion is simply relative to the axis of spinning, and axis ONLY. In addition to mass, everything in the universe has a moment of inertia. Just as mass the moment of inertia is also independent of any other thing. That is the only independent property. Everything else is relative, the act of...

WHAT? Neutrinos go faster than light? Really? Neutrinos have non-zero rest mass so how can they go faster than c...??

Hmm...Makes me wonder if the transmit power to light up the 60 W bulb was indeed 60W...:)

Or (I would not recommend it either :D) put the fluorescent bulb in a microwave oven..! I will light up...although the metal parts might spark or arc off! (Its dangerous to put metals in a microwave oven. Dont try this, but those who have tried had demonstrated that they will bulb will light up).

I will try to answer one question only, as simply as possible. "how transistors work". Think of a transistor as a "voltage controlled semi-conductor, with 3 terminals B, C and E, whose conductivity between C and E varies in response to a (small) voltage applied to B". How this conductivity...

Hmmm...Looking for a short-cut, eh? Is it for here, or to-go? Do you need ketchup with that? Just kidding :). When I was a TA, I recommended this book that cuts to the chase: Introduction to Digital Signal Processing, by Johnny R Johnson. It was pretty helpful to the new comers to DSP. You...

ANSYS can do it. But its pretty expensive...

First, freq multiplexing is actually time-addition of signals that are frequency separated, having been modulated with different carrier frequencies. Basically it involves multiplying in time carrier and the signal. Then the output of such modulated channels is time added in the cable...

Antenna Theory by Constantine Balanis. Its pretty good, IMO.

Why not? Just because you and me don't know how this can be done does not mean it can't be done ... :D. May be 5 mins is far out there, but is 20 mins ok for today? Say a bank of 1000 farad ultracaps charged independently...RC, with R = say 1 ohm , is 1000 seconds... This is not fiction, just...