On average, the lesbians, but not the straight twins, had different sized index and ring fingers, typically a male trait, but only on the left hand. This may be the result of exposure to more ...

the current in the wire increases the strength of the magnetic field increases The direction of a motor effect force can be found using Fleming’s left hand rule. Hold your thumb, forefinger and ...

For example, you may see a rider extending their left hand straight ... Similarly, bikers use many other hand gestures while ...