Planet Earth

푸코의 진자 Foucault Pendulum

Foucault Pendulum

Earth globe photo credit: Fineartamerica.com Foucault’s pendulum is a device invented by French scientist Leon Foucault to prove the Earth’s rotation In 1851. The fact that the Earth rotates has been known for a long time, but it is the…
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세계 시각, 낮과 밤 Daylight Map

Daylight Map

The sun icon has been displayed if the sun is located on the zenith. The shaded area is at night. Find out where ‘midnight sun’ happens.