Twisting electromagnetic fields hitting it have become rotationally Doppler shifted, so much (or so low) that they’ve gone through zero and into a ‘negative’ angular frequency.

At t 1, the angular velocity is zero, with a non-zero (negative) angular acceleration. At that time, the direction of rotation for BC is changing from CCW to CW.

To compensate and keep angular momentum constant, the washer's angular velocity has to increase. The reverse happens when you loosen the string and allow the washer to move out farther.

"Twisting electromagnetic fields hitting it have become rotationally Doppler shifted, so much (or so low) that they've gone through zero and into a 'negative' angular frequency.

Why do fidget spinners seem to spin forever? It's all about the angular velocity and negative angular acceleration. You know, basic rotational kinematics.

The melting of ice is decreasing Earth's angular velocity more rapidly than before, which may require a "negative leap second" or taking a leap second away, being adopted three years later than ...

With an angular velocity of 0.02328 radians per second, I get a ground speed of 116 m/s (260 mph). This means the plane is moving with the same velocity (but in the opposite direction).