Magical science demonstration of water not spilling from an upside down glass
by David Pescovitz from on (#4EJXK)
This gravity defying water trick, watch til the end. from r/blackmagicfuckery
A science teacher uses a classic but eternally astonishing magic trick in a lesson on atmospheric pressure and surface tension. The real magic though is the infectious curiosity she sparks in her students.
(Here's the secret and the science.)