Have you ever wondered why rockets can soar into space and helicopters can hover in the air? The core physics foundation lies in Isaac Newton's Third Law of Motion, proposed over 300 years ago: for every action, there is an equal and opposite reaction. This law profoundly reveals that the nature of force is mutual. Take a helicopter as an example: when its rotor spins at high speed, the blades push the air downwards (action force). Simultaneously, the downward-pushed air exerts an equal and upward-pushing force on the rotor (reaction force). It is this upward reaction force that overcomes the helicopter's own weight, allowing it to take off vertically or hover. This simple principle drives countless modern technologies, from aircraft to jet engines. Our interactive exhibit on "Newton's Third Law" transforms this abstract physical law into a dynamic experiment that you can verify yourself through a sophisticated helicopter vertical takeoff and landing model. Simply hold and continuousl
