Not sure if ye already know about this. I think its brilliant. Pretty easy to catch it out with a question it cant answer but still really well made. Cracker sense of humour too!
These are brilliant! George Bush skits:
Complex Dielectric Permittivity!!!
Calculate the power dissipated per unit cycle in a dielectric medium per unit volume in terms of the dielectric loss and the strength of the electric field
The previous question was:
Why does the dielectric permittivity of a material in...
Sorry if i posted this in the wrong section.
Iv just read about the casimir force which can cause 2 parallel plates 2 move towards each other in empty space. Where does the plates kinetic energy come from?
A friend of mine asked me where the energy comes from in this setup:
Imagine a fan/windmill inside a box. The fan is only allowed 2 turn clockwise and is connected to an axel which exits the box.
The atmosphere will keep the air inside the box at, well, atmospheric temperateure. Every so...
Lets say we mastered near lightspeed travel and instantaneous communication using quantum teleportation. Then we send the spaceship off to someplace 1 lightyear away. It turns around and for a brief moment travels twords earth at near lightspeed. During this moment the spaceship asks earth how...
Iv been reading the fabric of the cosmos and its my 1st and only source on theoretical physics. I reckon i understand str from it, i can work spacetime diagrams and lorentz transforms but my understanding must b wrong somewhere.
Str says the faster an object moves the slower time flows for...