Air pressure experiment (Urdu) thick paper can't fly,

Invisible Glass Stirrer Experiment Material Glass stirrer Beaker Glycerine Procedure Pour Glycerine into the Beaker and then immerse the Glass stirrer the Beaker. What Happens The Glass stirrer looks like a ghost like object in the container, almost invisible. Explanation The real secret behind this science experiment is the index of refraction. When light travels…