Millionaire Mentor on Instagram: "In this legendary lecture, Walter Lewin demonstrates weightlessness using nothing more than a stone and his own body. As he jumps off the table while holding the object, both he and the stone fall at the exact same rate. For that brief moment, the stone appears weightless in his hand. Gravity has not disappeared. Everything is simply accelerating downward together. This is the same principle astronauts experience in orbit. They are not floating because gravity i