levitation
Let an agent explain levitation, relay physical methods, principles, applications and limits from physics and engineering sources, describe the named forms, present paranormal or religious claims with attribution, and distinguish levitation from flight, buoyancy, microgravity and stage illusions.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent explain levitation, relay physical methods, principles, applications and limits from physics and engineering sources, describe the named forms, present paranormal or religious claims with attribution, and distinguish levitation from flight, buoyancy, microgravity and stage illusions.
The process by which an object is held aloft without mechanical support, against gravity, by a counteracting force, including magnetic levitation used in maglev trains and superconducting levitation through the Meissner effect, aerodynamic levitation on gas jets, electrostatic levitation of charged samples, optical levitation using laser radiation pressure, and acoustic levitation with standing sound waves, used for containerless materials processing and research; the registry aliases distinguish motionless levitation from levitation with controllably moving objects. Claims of human levitation in religious or stage contexts are illusions or matters of belief, attributed. Earnshaw s theorem shows static levitation with only fixed permanent magnets is unstable.
What it is for: Suspending objects without contact.
It can be explain physical methods; relay principles and limits; describe named forms; present non-scientific claims with attribution.
Distinguishing features
No contact
Force balance
Stability challenges
Containerless processing
What it looks like
Objects floating above magnets, gas jets, speakers or in laser beams.
Physical character
Earnshaw s theorem: 1842 year
Meissner effect discovered: 1933 year
Shanghai maglev opened: 2004 year - commercial service
How it is recognised
Suspension against gravity without contact
Motionless levitation, levitation with controllably moving objects, aerodynamic levitation, electrostatic levitation, optical levitation, acoustic levitation
Flight uses lift and thrust; buoyancy uses displaced fluid; microgravity is free fall; stage illusions use hidden supports
Related models
is a kind of - in registry terms
includes -
is constrained by -
is contrasted with -
In practice
Families and kinds
magnetic and superconducting levitation
aerodynamic levitation
electrostatic levitation
optical levitation
acoustic levitation
Standards and regulation
Laser safety standards for optical trapping
Railway safety regulation for maglev
Failure modes and hazards
Presenting illusions as physics
Laser and high-voltage hazards
Overstating maglev deployment
Also called
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.levitation-act
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Understand What levitation is.
Science.
Definition
Definition.
Definition
Definition.
- What is levitation, and how does it differ from flight, buoyancy, microgravity and stage illusions? definition
- Is the question about physics, engineering, magic tricks or religious claims? boundary
Forms
Named forms.
Forms
Forms.
- What are aerodynamic, electrostatic, optical and acoustic levitation, and motionless versus moving levitation? definition
- Which entry fits the specific method? action
Physics Principles.
Science.
Magnetic
Magnetic levitation.
Magnetic
Magnetic.
- How do diamagnetism and superconductors enable stable levitation despite Earnshaw s theorem? provenance
- Which references are standard? provenance
Acoustic
Acoustic levitation.
Acoustic
Acoustic.
- How do standing sound waves trap small objects? provenance
- Which sources are cited? provenance
Applications Applications.
Regulation.
Maglev
Maglev trains.
Maglev
Maglev.
- How do maglev trains levitate, and where do they operate, checked against current sources? provenance
- Which entry fits maglev? action
Materials
Containerless processing.
Materials
Materials.
- Why do scientists levitate samples for materials research? provenance
- Which entry fits electrostatic levitation? action
Context Culture.
Attribution.
Illusion
Stage illusions.
Illusion
Illusion.
- How do magicians create the appearance of levitation, in general terms? provenance
- Which entry fits levitation (illusion)? action
Religion
Religious accounts.
Religion
Religion.
- How are levitation accounts of saints and yogis described by believers and sceptics, with positions attributed? provenance
- Is the presentation neutral and attributed? boundary
What the second pass must settle
- Should acoustic levitation be a separate entry?
- How should maglev projects be kept current?
- Should paranormal levitation be a separate entry?