Using earths magnetic field and gravity to travel?

[Guest NoSoulX]

Could it be possible to use Earths magnetic field and "anti-gravity" to create a new type of travelling?

[YT2095]

if you could generate or manufacture an "Anti-Gravity" ANYTHING, then the answer would be a resounding YES, however, until such time, the answer IS invariably NO as the AG part has yet to be fullfiled

[Guest NoSoulX]

But isn't it true that magnetic waves has a frequency or a wave?

 

Every energy has a counter-energy.

[Cap'n Refsmmat]

I believe that is "every matter has counter matter."

[swansont]

Note that magnetic forces do no work (the force is perpendicular to velocity), and so cannot be directly used to change the kinetic energy of an object.

 

If you want to use antigravity, you'll have to discover it first. And it had better not violate the laws of thermodynamics! (i.e. you can't turn it on and off)

[Crash]

Travel aorund the earth? free fall? or off into space?

[ski_power]

Violate which law of thermodynamics?

[swansont]

Violate which law of thermodynamics?

 

Any of them. If you can switch off an antigravity device, it is conceivable you could make a perpetual motion machine:

 

Turn the machine on.

Raise a mass.

Turn the machine off.

Let the mass fall and do work (e.g. turn a turbine)

 

If it took less energy to raise the mass than the work you extracted, you have perpetual motion. So if such a device exists, it must consume at least as much energy as you save in lifting the mass. It can't be a static device that can be used to e.g. shield half of a ferris wheel, because that's perpetual motion, too.

 

Once you start being able to create energy you coud also decrease entropy, so it really doesn't matter which laws of thermo you discuss; you'd be violating them.

[ski_power]

Ok got your first part, But I lost track here

 

"It can't be a static device that can be used to e.g. shield half of a ferris wheel, because that's perpetual motion, too."

 

Could you elaborate.

[swansont]

Ok got your first part' date=' But I lost track here

 

"It can't be a static device that can be used to e.g. shield half of a ferris wheel, because that's perpetual motion, too."

 

Could you elaborate.[/quote']

 

Put your static device, i.e. a "gravity shield," under one side of a large wheel, oriented like a ferris wheel. The unshielded side is now heavier than the unshielded side, so there is a perpetual torque on the wheel. Hook it up to a generator and you have free energy, violating the laws of thermodynamics. So we have reasonable confidence such a material/device doesn't exist, unless the shield uses more energy than the wheel can generate.

[ski_power]

Ok, now I got it. Thanks.