Foucault Medium-Speed Constraint

ID: relativity.history.foucault_medium_speed

Represents Foucault's rotating-mirror comparison showing light travels slower in water than in air.

Status: diagnostic

Uncertainty

• This diagnostic badge is a theory locator; its claim still needs independent, claim-specific validation.

Sources

• Foucault-1850-rotating-mirror-water-air
• AJP-2010-Foucault-water-speed

Claim boundaries

• This badge locates a theory claim; it does not validate a physical effect or engineering application.

Diagnostic context only. Cite independent evidence for claims about the world.