Recent content by Blibbler

I recommend that you get hold of a copy of "Classical electricity and magnetism" by Wolfgang Panofsky and Melba Phillips. Maxwell's equations only describe the divergence and curl of the electric and magnetic field vectors E and B in terms of static charge, current and each other. They make no...

Good question and the interesting thing about gravitational waves is that they are a distortion of their medium so not only do they interfere by addition and subtraction but also by multiplication and exponentiation - amplitude and frequency modulation: two interacting gravitational waves will...

F=ma

This effect could be caused by asymmetric or damaged rifling in the barrel of your weapon.

You could make a circuit where the various resonant frequencies are not harmonically related (try using values of C and L related by surds) , but in a passive system this will dissipate all the energy of the signal very quickly - you will get the big zero you are looking for, but also a lot of...

Try drawing it! Get a pen and a piece of paper. Make different scenarios for traffic flow rate, density etc. and see empirically how the equations describe what you are drawing. All equations ultimately describe systems which you can visualise, so by turning this on its head you can make a...

The dielectric heating process caused by microwave absorption is basically frictional - the electric and magnetic field vectors of the microwaves cause separated charge to move, so any molecules with a degree of charge separation (including any polar molecules such as water) will move in...

I can imagine it sitting between pairs of Helmholtz coils as a demonstration of the Lorentz force or between electrostatically charged plates to demonstrate the Coulomb force or some combination, particularly if the gas in the tube glows when ionised.

An Estes B6 Motor with specific impulse of 101s has an exhaust velocity of 101s x 9.81 m/s/s = 990.81 m/s which is supersonic, therefore a convergent-divergent nozzle would hinder rather than help. The divergent nozzle already fitted to the motor will work very well.

This sounds similar to some active electroacoustic instruments I designed at college in the early 90s. But yours is a lot better looking! Have you considered using a transient generator to excite the string and a guitar pickup to provide feedback which could then be fed into the driver coil...

There are several components to this. To recreate it try the following: Make a repeating sequence of a couple of dozen notes playing simple arpeggios at about 180 notes a minute. 1) Generate the basic tone by mixing a sawtooth wave with a PWM wave where the pulse width is set to vary slowly...

There are three basic reasons. First to configure the spacecraft for its trip to the moon the command and service module had to turn around and dock with the lunar module before the translunar orbit injection burn. Secondly, to calculate the best burn time it was necessary to know the state...

The key to understanding the Faraday disc lies in understanding Arago's magnetism of rotation, where a copper disc is rotated and is seen to affect a nearby magnet. This shows that merely spinning a copper disc generates a magnetic field. We now know that an electric current in copper is caused...

The magnetic field strength is given by B=nIl where B is the magnetic field, n is the number of turns per metre of the wire of length l metres that makes up the coil and I is the current flowing through the coil. The current flowing through the coil is given by Ohm's Law I=V/R where V is the...

Take a look at this: http://www.vanderbilt.edu/cttc/technology/ferroelectric-nanofluids-piezoelectric-and-electro-optic-uses