Planet Earth

인공위성의 궤도 Path of Satellite

Path of Satellite

As the satellite orbits the Earth from pole to pole, its east-west position wouldn’t change if the Earth didn’t rotate. However, as seen from the Earth, it seems that the satellite is…
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푸코의 진자 Foucault Pendulum

Foucault Pendulum (WebGL)

Earth fixed Latitude * This is a Web page using WebGL technology and do not work in Internet explorer. Foucault’s pendulum is a device invented by French scientist Leon Foucault to prove…
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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.