Rocket Man

and another plate of lead sulfate... why deconstruct the car battery in the first place?

adding salt to the snow further chills the water, so you could potentially extract energy from the the increased heat differential. low temperature propellants and condensers packed in ice. i dont think you'd get much power from 4-5 degrees C though.

my appologies however, chains are quite a bit cheaper, easier to put on and give better performance up steep slopes.

i'm not much involved with magnetocaloric effects nor existential crises... it would pay you to leave a thread finalised or on topic. OPs generally don't appreciate hijacked threads.

you don't get tyres for ice, you get chains on your tyres for ice. dead slow max speed.

it draws energy from the magnetic properties of the material to create the heat. so if you keep upping the field strength, the material will keep producing heat up to a point. iirc, it changes the specific heat of the material. if you release the field, the energy returns to the material with a cooling effect. you can extract a few joules per unit mass of compund per tesla. there are a few refrigeration systems that use chains of the stuff going past a magnet.

depending on how many magnets you have, you could get one to stay above three others provided it were spining. novelty shops sell such things and i assume they also have a rotating field in the base to maintain angular momentum in the floating armature. there is no static equilibrium to simply have magnets hover. there're a couple of electric methods about that use hall effect sensors either side of a solenoid (augment the solenoid with neodymium?). basic principle is, the hall effect sensors are set up with a bias to match the deformed field due to ferrous metal underneath, op amps amplify the error and the solenoid counters it. result is, ferrous metal stays at a predefined distance from the solenoid. there's an existing patent on this so you can't buy one. you may also be able to set your silver levitating above a speaker coil from a sub given enough cooling and ac power.

too true.

note the innefficient accelerator mechanism, inductive acceleration will not achieve fusion. few accererators do. you'd be better off strapping a plasma drive to a tokamac.

it only works in pulses, induction form a changing magnetic field the instant you connect the power. also, the charge will be repelled from the wire as it accelerates. lenz's law. i personally am a fan of KV range accelerators. they have far higher exit velocities, far less beam dispersion and continuous load capacity.

could carbonic acid to hydrogen carbonate play a role? i can imagine hydrogen carbonate would draw hydrogen gas into solution via the cathode but i'm drawing a blank as to where the other hydrogen ions go. (residual oxygen with CO2 catalyst?)

i can't think of any one thing. pretty much, if i could suitably abuse it to observe various principles at work, it became scientific. lego was one of those versatile things that could be used repeatedly. aquarium equipment gave me fairly high vacuums to toy around with. i really don't know if there's any "best" science ed toys. an inquisitive mind will appropriate anything for it's purposes but lego was definately the most versatile until they put stories to the kits

a continuously variable transmission is going to be a little bulky for all but the biggest quadrotors. it wouldn't take much to tilt each rotor set around it's drive shaft to achieve lateral motion, it would also simplify gearing and directional control. collective pitch adjustments would work, they'd also make the control similar to a variable speed quadrotor.

i met someone who used a drink bottle to house a bundle of NiCad rechargables. he went mountain biking with it so he had a good intensity on the front. he claimed 3 hours continuous light which was feasable considering the kilo of batteries. reed switches on the brake cables would be a simple mechanical problem. run the tail and head lights constantly with additional (brake) lights via the reed switches. if you can get a regulated dynamo and a matching voltage rating on the battery, you wouldn't need to worry about over charging. did you want to wind the dyno yourself? that's a lot of work.