- #1
zarei
- 8
- 0
Is there any relativistic version for Archimedes principle?
Archimedes principle and relativity
- Context: Graduate
- Thread starter zarei
- Start date
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Discussion Overview
The discussion explores the potential relativistic interpretations of Archimedes' principle, particularly in the context of fluid dynamics and gravitational effects. Participants consider how concepts of mass and energy might apply in relativistic scenarios, including hypothetical situations involving perfect fluids and neutron stars.
Discussion Character
- Exploratory
- Debate/contested
- Conceptual clarification
Main Points Raised
- One participant questions whether a relativistic version of Archimedes' principle exists, suggesting that relativistic effects are negligible for Earth-bound fluids.
- Another participant proposes using energy instead of mass in the context of a relativistic perfect fluid, although they express uncertainty about the feasibility of such a fluid.
- A different participant raises concerns about the practicality of energy displacing water, indicating a lack of confidence in their understanding of the topic.
- One participant equates gravity with Archimedes' principle, suggesting that spacetime could serve as a medium for buoyancy effects, although this idea introduces complexities regarding the nature of up and down in the universe.
- Another participant notes the need for an analog of Archimedes' principle to discuss hydrostatic equilibrium within neutron stars, indicating a specific application of the principle in a relativistic context.
Areas of Agreement / Disagreement
The discussion contains multiple competing views regarding the applicability of Archimedes' principle in relativistic contexts, and no consensus has been reached among participants.
Contextual Notes
Participants express uncertainty about the existence of a relativistic perfect fluid and the implications of using energy in place of mass. The discussion also highlights the complexities of applying classical principles to relativistic scenarios without resolving these issues.
- #2
Danger
Gold Member
- 9,793
- 250
I suppose such might exist if you want to get really weird about it, but relativistic effects have essentially no bearing upon any kind of Earth-bound fluid action. How often does something at a speed approaching c fall into a bathtub?
- #3
zarei
- 8
- 0
Suppose instesd of mass we use energy and our fliud be a relativistic perfect fluid.
- #4
Danger
Gold Member
- 9,793
- 250
zarei said:
That sort of negates the original question, since such can't exist. I'm getting out of my depth here, so I'm going to wait for someone with a better education to respond.
- #5
blackwing1
- 32
- 0
zarei said:
wouldn' t is kinda be hard for the energy to displace the water?
then again, I'm not einstein so i dunno.- #6
adivinorum
- 1
- 0
gravity = archimedes principle.
the fabric of spacetime replaces the water in this pple. in the universe there is no up or down, therefore the buyoyancy pressure takes place everywhere around matter until matter becomes spherical.
the fabric of spacetime replaces the water in this pple. in the universe there is no up or down, therefore the buyoyancy pressure takes place everywhere around matter until matter becomes spherical.
- #7
Bill_K
Science Advisor
- 4,159
- 207
One needs an analog of Archimedes' Principle to discuss hydrostatic equilibrium in the interior of a neutron star.
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