Core Insights - Scientists at Okinawa Institute of Science and Technology have developed a nearly frictionless, freely suspended rotating graphite rotor, addressing the long-standing issue of "eddy current damping" in macroscopic levitation systems [1][2] - This advancement opens new avenues for high-precision measurements and quantum research, as it allows for the isolation of experimental subjects from external disturbances [1] Group 1 - The rotor's torque and angular momentum can be utilized to measure physical quantities such as gravity, pressure, and momentum, with the potential for significantly improved experimental accuracy in a contactless, freely suspended state [1] - Unlike micro-scale devices that rely on complex optical or electrical systems, this macroscopic system can achieve magnetic levitation at room temperature, offering a simpler structure and better environmental adaptability [1] - The research team demonstrated that perfect axial symmetry in the system can completely eliminate eddy current damping, which is crucial for enhancing measurement precision [2] Group 2 - The newly designed rotor is expected to serve as a core component for high-precision sensors at millimeter and even micrometer scales, with applications in high-sensitivity gyroscopes [2] - Additionally, the rotor can enter a quantum state at low temperatures, facilitating the exploration of vacuum gravitational effects and other macroscopic quantum phenomena [2]