Dentro e fuori
(via 1e3no)
This image displays Kepler’s second law of planetary motion.
“A line joining a planet and the Sun sweeps out equal areas during equal intervals of time” (Meaning that each triangle seen there has equal area.)
- The black dot represents a planet, the point where the black lines intersect represent the sun.
- The green arrow represents the planet’s velocity,
- The purple arrows represents the force on the planet.
(Image source: here)
(via 1e3no)
(via gotmyhashpipe)