1. In 1659 Huygens derived the formula for the centripetal force
F = mv2/r
In 1659 Huygens derived the formula for the centripetal force

2. m1v1 = m2v2 Huygens showed by experiment that
momentum before = momentum after collision
m1v1 = m2v2

3. use formulae in physics
Huygens is seen as the first “theoretical” physicist as it is claimed he was the first to
use formulae in physics

4. I have however still to confirm this claim

5. Huygens had a geometrical method to differentiate the quantity
dx/dy = y
Huygens had a geometrical method to differentiate the quantity

7. Diagram of a catenary indicating a geometric study
Diagram of a catenary indicating a geometric study

11. http://commons. wikimedia
Huygens drawing of the balance wheel and balance spring which he invented – the now standard basic principle of the pocket watch