The optical torque that drives a rotor originates from asymmetric interactions between the light and the rotor – which means that the rotation requires complex light illumination or rotors with ...

(Courtesy: iStock/amtitus) A gyroscope sensitive enough to detect Earth’s rotation has been created using a chip-based optical cavity. It was developed by Kerry Vahala and colleagues at Caltech in the ...

This rotated light is partially blocked by a second filter parallel to the first but allowed to pass completely through a second filter, which has been rotated by an angle equal to the rotation of the ...