Fleming’s Left Hand Rule

Place the fore finger and the second finger of the left hand at right angles. Then, if the fore finger points in the direction of the magnetic field and the second finger in the direction of the current, then the thumb will point in the direction of the motion.

which is popularly known as “electronic ink”. E-ink screens look like newsprint – they are black and white, do not glow or flicker, which has a beneficial effect on the user’s eyesight. Eyes do not get tired, as when reading from a laptop or tablet screen , and accordingly, a person can read text with a reader for as long as with a regular book. Also, I would like to note that E-ink screens are suitable for reading even in bright light conditions, because they do not lose their brightness, such as the screens of smartphones or tablets. On the other hand, a sufficient amount of light is required to use the reader, as in the situation with a regular book.