Recent content by little1406

A.T. the fixed-to-the-Earth gyro was just a simplification to try to understand the forces/torques involved. The real energy-producing gyro would be in a complicated gimbal connected to a gearbox which allowed the gyro axis to rotate probably at 1/2 revolution per day to extract maximum power...

A.T., it's easy for me to see that during the aligned-axis spin up, the gyro's acquisition of angular momentum must come from an equal and opposite change in the Earth's angular momentum. And Conservation of Angular Momentum forces me to believe that during the tilting-to-horizontal of this...

Thanks, Baluncore, you have provided the explanation I needed…and A.T. is right about the precession torque vector lying in the horizontal plane but orthogonal to the gyro’s spin axis...my apologies. So, the conclusion I’m being dragged towards is that there is no rotation-retarding torque...

Thanks for the replies. A.T. I'm pretty sure you are wrong about the torque vector that the Earth exerts on the gyro to make it rotate once per day. It has to be vertical...i.e., orthogonal to the gyro's spin axis. Orodruin points out the main point of this apparent paradox. There are no...

Consider a gyro located at the North Pole with its axis of rotation horizontal and its bearings fixed w.r.t. the Earth. When the gyro is spun up, its own angular momentum resists being rotated once per day by the Earth so the Earth must exert forces on the bearing mounts which amount to a...

The freedom-of-choice loophole to explain the results of quantum entanglement experiments says that somehow a non-random manipulation of the two polarizer angles could reproduce the prediction of Bell’s inequality without quantum non-locality. But it strikes me that the experiment could be...