Greek Mathematics. Mikaela and Akila. The History of Math. Mathematics began in the 6th century BC Pythagoras coined the term mathematics, which came from the word mathema which means "subject of instruction"
Mikaela and Akila
sound producing body
inversely proportional to length
Tropic of Cancer: one of the five major circles of latitude that marks maps of the Earth. The current latitude is 23° 26′ 22″ north of the Equator.
Local noon: when the sun is the highest in the sky; not necessarily 12 pm on the clock.
Solstice: an astronomical event that happens twice a year when the tilt of the Earth's axis is most inclined toward or away from the sun.
In the northern hemisphere, summer solstice: around
June 21 and winter solstice: around December 21.
What matters for the experiment is the fact that on the summer solstice, local noon, the sun rays are just overhead (at a right angle to the ground) on the Tropic of Cancer.