Physics question - Forcefields - Possible?
Discussion
notoriousnorbert said:
If you actually watch the video it's not a forcefield per se - it's a load of sensors that pick up incoming missiles and then shoot a thing at the missile to blow it up before it gets to the tank.Still cool, but it's not Star Trek quite yet.
I suppose the main obstacle to sci fi style shield things is that in the movies they seem to be like a protective bubble or a shell - stopping stuff passing through its wall surface, but otherwise not affecting anything inside or outside of it. You could have a similar effect with modern technology I suppose with a really bloody strong magnet or something - however you wouldn't be able to have any people or technology inside of its area of effect without turning it to mush just like the bullets you're supposed to be stopping.
notoriousnorbert said:
The dumbs US military decided in favour of a new Ratheon system which was designed in house but would take another 5 years of development, rather than using the Trophy system which is available now. No doubt they copied it and that is why it is 5 years behind the Trophy system... wonder how many lives will be lost as a result of not using the system which is tried and tested to be 90% effective
TheCarpetCleaner said:
absolutely said:
Yes, magnets have a forcefield around them, simple science, pre-GSCE or Standard Grade.
Yes thanks for that, I did say in my post above as in energy walls. I have not yet seen a magnet that has stopped me from passing by...TheCarpetCleaner said:
absolutely said:
Yes, magnets have a forcefield around them, simple science, pre-GSCE or Standard Grade.
Yes thanks for that, I did say in my post above as in energy walls. I have not yet seen a magnet that has stopped me from passing by...Blue Meanie said:
TheCarpetCleaner said:
absolutely said:
Yes, magnets have a forcefield around them, simple science, pre-GSCE or Standard Grade.
Yes thanks for that, I did say in my post above as in energy walls. I have not yet seen a magnet that has stopped me from passing by...TheCarpetCleaner said:
absolutely said:
Yes, magnets have a forcefield around them, simple science, pre-GSCE or Standard Grade.
Yes thanks for that, I did say in my post above as in energy walls. I have not yet seen a magnet that has stopped me from passing by...I've lived too long to say such things are impossible but, as a Physicist, I'd have to agree with an earlier poster: we (i.e. even cutting-edge research scientists) are nowhere near fully understanding fields, especially gravity. We have no idea how pigeons use the Earth's magnetic field to navigate. There is no known force which repels uncharged body tissue or other non-metals.
We'll ignore the forces which act at the nuclear scale for a host of reasons.
It's good sci-fi, though.
We'll ignore the forces which act at the nuclear scale for a host of reasons.
It's good sci-fi, though.
driverrob said:
I've lived too long to say such things are impossible but, as a Physicist, I'd have to agree with an earlier poster: we (i.e. even cutting-edge research scientists) are nowhere near fully understanding fields, especially gravity. We have no idea how pigeons use the Earth's magnetic field to navigate. There is no known force which repels uncharged body tissue or other non-metals.
We'll ignore the forces which act at the nuclear scale for a host of reasons.
It's good sci-fi, though.
Magnetic fields can repel uncharged body tissue. Flesh exhibits weak diamagnetism.We'll ignore the forces which act at the nuclear scale for a host of reasons.
It's good sci-fi, though.
driverrob said:
Oh yes, I forgot the frog levitation. I was thinking more in terms of the sci-fi version which has no effect except at a specific distance.
We have the technology to levitate frogs? Wow, so there is no need for them to get squashed crossing the road anymore, that makes me feel so much better! Maybe in a few years this amazing feat will be scaled up so that larger amphibians can be levitated, like toads or large newts? s2art said:
TheCarpetCleaner said:
absolutely said:
Yes, magnets have a forcefield around them, simple science, pre-GSCE or Standard Grade.
Yes thanks for that, I did say in my post above as in energy walls. I have not yet seen a magnet that has stopped me from passing by...
Gassing Station | The Pie & Piston Archive | Top of Page | What's New | My Stuff