1 Kepler's Task. 2  Accurate Data. 3  Shape of the Path. 4  1. Planets move in ellipses with the Sun at one focus. 5  2. The radius vector describes equal areas in equal times. 6  3. Squares of periodic times are to each other as cubes of the mean distances.
So how fast do the average adult's nails grow? The simple answer is that fingernails grow about one-tenth of an inch (3 millimeters) a month. If you lose a fingernail, it will take four to six months to regrow completely. Toenails take a year to a year and a half to grow from cuticle to tip [source: Robb-Nicholson ].
If you are having an accident which causes the big toe nail to come off instantly, you might want to be cautious about some things to prevent more severe infection. A separated nail from the nail bed will not reattach. Instead, a new nail will grow back within a quite long time. A big toe nail, for instance, requires up to 12 months to regrow completely. This new nail might also be in a different shape from the separated one, as this nail grows after the nail bed is injured.