- law of isochronism
- 等时值定律
Medical Chinese dictionary (湘雅医学词典). 2013.
Medical Chinese dictionary (湘雅医学词典). 2013.
Christiaan Huygens — Born 14 April 1629 … Wikipedia
Pendulum — This article is about pendulums. For other uses, see Pendulum (disambiguation). Simple gravity pendulum model assumes no friction or air resistance … Wikipedia
Pisa — • Archdiocese in Tuscany in central Italy Catholic Encyclopedia. Kevin Knight. 2006. Pisa Pisa † … Catholic encyclopedia
Balance spring — A balance spring, or hairspring, is a fine spiral or helical spring used in mechanical watches, marine chronometers, and other timekeeping mechanisms to control the rate of vibration of the balance wheel. A balance spring usually has a regulator… … Wikipedia
Conical pendulum — A conical pendulum is a weight (or bob) fixed on the end of a string (or rod) suspended from a pivot. Its construction is similar to an ordinary pendulum; however, instead of rocking back and forth, the bob of a conical pendulum moves at a… … Wikipedia
Pendulum (mathematics) — The mathematics of pendulums are in general quite complicated. Simplifying assumptions can be made, which in the case of a simple pendulum allows the equations of motion to be solved analytically for small angle oscillations. Simple gravity… … Wikipedia
Galileo Galilei — Galileo Galilei † Catholic Encyclopedia ► Galileo Galilei Generally called GALILEO. Born at Pisa, 15 February, 1564; died 8 January, 1642. His father, Vincenzo Galilei, belonged to a noble family of straitened fortune, and had… … Catholic encyclopedia
GALILEO — an illustrious Italian mathematician, physicist, and astronomer, born at Pisa, demonstrated the isochronism of the pendulum, invented the thermometer and the hydrostatic balance, propounded the law of falling bodies, constructed the first… … The Nuttall Encyclopaedia