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A while back I posted a question to Physics.SE about a hypothetical (and likely impossible) Artificial Gravity device. I thaught about constraints, so my AG device would not violate known laws of physics (beyond existing). If existing, what non-obvious applications would be possible?
Suppose you have a Device that creates an 'artificial gravity' (AG) inside a Box, with these properties:
- the system does not use inertial forces (like centrifugal force) or a huge mass to create AG
- the AG 'feels' just like gravity/inertia over most of the volume of the box - to be more precise, there's no experiment to tell the difference without looking outside
- the Device, the Box and its content are still subject to any gravitational forces that may be present, but the AG force adds to other gravity/inertia forces, net force may be zero
- Matter, Energy and Information can leave and enter the box
- there is a smooth but strong gradient in the AG at the walls of the box - the field does not extend outside the box
- conservation of energy still holds: if the AG does work, this energy has to be supplied to the device in some way, vice versa for work done against the AG. Some percentage of this energy (both ways) is lost as low grade heat.
- conservation of momentum still holds: for every force due to the AG on an object, there is a corresponding counteracting force on the device
The obvious application would be to dampen gravity/acceleration in a rocket, or to provide gravity in space; or to provide weightlessness on earth (or Jupiter). The less obvious application would be to simulate existing machinery (pump, press, gun ...). I'm not interested in these.
A ' weird' use of AG would be
- not replicating known machinery
- playing with the time dilation and red/blue shifting aspects of gravity
- be at least nominally useful
What woiuld this look like?

I'm honestly not sure if this counts as "too broad" or not. Normally, "what are possible ways to use technology X?" is an almost textbook example of too broad, but with the reasonably detailed description, this question just might not be too broad. – a CVn – 2016-05-02T13:08:54.967
One thing I would like to know is: is the gravity generated by this device bounded by the device's walls, or does it extend out to infinity like a natural gravitational field would, only falling off and approaching but never actually reaching zero intensity? – a CVn – 2016-05-02T13:09:48.593
bound by the walls, I clarified the bullet point. – mart – 2016-05-02T13:32:52.813
1I'm going to vote to close this as opinion based, because what some people see as weird or non-obvious may be different from other people's perceptions. – Xandar The Zenon – 2016-05-02T16:15:40.970
1I agree a little with XandertheZenon however I will leave this open as I think it is relatively clear what the question means by obvious/non-obvious. – Bellerophon – 2016-05-02T16:59:46.460
I don't. Looking for weird stuff not on a given list of already considered ideas? Cool. Giving a list as an example from which to derive a useful definition of "less obvious" is silly. – The Nate – 2016-05-02T17:36:42.580
@TheNate I think this is borderline opinion based. – Bellerophon – 2016-05-02T17:39:01.330
How is this AG different from a magnetic field in which the person experiencing the field is wearing a magnetic suit? – Akshat Mahajan – 2016-05-02T18:10:25.943
I' edited the question to better define what I mean by weird. I'll also provide an example (that only occured to me after posting the question) – mart – 2016-05-02T19:09:26.200
Manufacturing defect-free crystals in microgravity. See http://news.discovery.com/space/growing-crystals-in-zero-gravity-121227.htm
– Emilio M Bumachar – 2016-05-02T17:48:54.830any indication of the amount of energy this device uses? ultimately that is one of the key elements that make something useful or not – Erik vanDoren – 2016-05-03T16:37:52.410
what's unclear about the 6th bullet point? – mart – 2016-05-04T10:44:43.900