Where do the curled fingers of the left hand point?

Where do the curled fingers of the left hand point?

For left-handed coordinates the left thumb points along the Z axis in the positive direction and the curled fingers of the left hand represent a motion from the first or X axis to the second or Y axis. When viewed from the top or Z axis the system is clockwise.

Is there a way to tell which is the left hand?

Also, when you are in doubt as to which side is which, an old trick is to make an L shape with the thumb and the index finger of each hand. The one that actually looks like the letter L is the left hand. Dyer O. (2004).

What happens when physicists use their left hand?

Occasionally a physicist will accidentally use their left hand, causing them to predict that the magnetic force will point in a direction opposite the true direction! When charges are sitting still, they are unaffected by magnetic fields, but as soon as they start to move, the magnetic field pushes on them.

Which is correct right hand or left hand coordinates?

right-handed coordinates on the right. Coordinates are usually right-handed. For right-handed coordinates the right thumb points along the Z axis in the positive direction and the curl of the fingers represents a motion from the first or X axis to the second or Y axis. When viewed from the top or Z axis the system is counter-clockwise.

Is the right thumb on top or bottom of the hand?

Left thumb on top; right thumb on top. When people clasp their hands, almost all have a strong preference; either the right thumb is on top (R) or the left thumb is on top (L). Hand-clasping is sometimes used to illustrate basic genetics; the myth is that hand-clasping is controlled by one gene with two alleles, and the allele for L is dominant.

Why does the index finger of my left hand go numb?

Numbness of the index finger of the left hand. Numbness of the index finger of the left hand may indicate some endocrine disorders (for example, diabetes, or other diseases that lead to metabolic disorders), inflammatory processes in the joints, possible injuries and tissue damage.

What causes pain on the side of the hand?

Osteoarthritis is pain that typically affects the interphalangeal joint of the fingers and thumb. It is a degenerative joint disease causing gradual deterioration of the cartilage forming the joints of the hand (Figure 3). Rheumatoid arthritis is pain located at the knuckles of the fingers and wrist bone on the side of the small fingers (Figure 4).

What causes your finger to bend at the base?

Tendons over the joints slip and cause the fingers to bend towards the little finger (ulnar drift). Flexor tendonitis (trigger finger) is pain that may be located in the palm at the base of the finger. The condition affects the tendons of the fingers causing the finger to remain in the bent position when attempting to straighten it (Figure 5).