Uncertainty Principle in Different Universes

This lecture explores the concept of uncertainty in position and momentum by comparing a universe where Planck's constant is significantly higher than in the real world to our own universe. Through calculations, the instructor demonstrates how the uncertainty in the position of a tennis ball differs in these two scenarios, highlighting the implications of the uncertainty principle. By analyzing the uncertainty in momentum and applying the principle, the lecture reveals the challenges of playing tennis in a universe with a modified Planck's constant. The comparison with our universe emphasizes the minuscule uncertainty in position for classical objects, showcasing the impact of quantum mechanics on our understanding of physical phenomena.