KHAN-VR: Gravity as Vacuum Pressure - The Stone-Water Model

A new hypothesis proposing that gravity arises from vacuum pressure gradients, not from virtual particles or gravitons. 

Core idea: The speed of light 'c' is not constant everywhere. Near mass, vacuum density increases, so refractive index 'n' increases. Therefore v = c/n becomes slower near mass. Light bends because it takes the path of least time through variable vacuum.

This model explains gravitational lensing using FSc-level optics: v=c/n and Fermat's principle of least time. Includes "Stone-Water Model" diagram for intuitive understanding at 11th-12th class level.

This work provides an alternative interpretation to Dark Matter and Dark Energy, suggesting galactic rotation curves may result from vacuum pressure differences rather than unknown particles.

Keywords: gravity, vacuum pressure, variable speed of light, KHAN-VR, refractive index, alternative to dark matter