Today we learnt about Kepler's Laws. The first law: The Law of Orbits , all planets move in elliptical orbits, with the sun at one focus. The second law: The Law of Areas, a line that connects a planet to the sun sweeps out equal areas in equal times. The third law, the Law of Periods, the square of the period of any planet is proportional to the cube of the semi major axis of its orbit. Kepler's laws were derived for orbits around the sun, but they apply to satellite orbits as well.
This is one of Kepler's laws, the Law of Orbits. The elliptical shape of the orbit is a result of the inverse square force of gravity. The eccentricity of the ellipse is greatly exaggerated here.
This is one of Kepler's laws.This empirical law discovered by Kepler arises from conservation of angular momentum. When the planet is closer to the sun, it moves faster, sweeping through a longer path in a given time.
Next week we will be launching water rockets. I can't participate in the launch, but I can aid in the building of the rocket.
Friday, January 5, 2018
Thinking back on it , I believe that the hard work of transporting and reassembling the equipment was worth it in the end as we got to experience something that most students are unable to do. Entering the museum during off hours and presenting to the general public in a museum.