Daylight Map
If you are asked to access your location, please allow it. Your personal data is not stored on the server. day and night The earth is spherical, so only half of the…
Read more
Science simulation
Polarization
Polarizers are made of long chained molecules which absorb light with electric fields. When you shine a light on a polarizer, only a part of the light is passed. The materials in…
Read more
Moment of Inertia
Why does a rolling object go down slower than an object that slides down? In conclusion, the rolling object wasted some energy to rotate.In contrast, an object that slides without rotation can…
Read more
3D Location of the Ursa Minor(Polaris)
Constellations and distance to stars If you look at the sky where there is no light on a clear night, there are so many stars can not count. Thousands of years ago,…
Read more
Electromagnetic Waves around of Visible Rays
Electromagnetic radiation refers to the waves of the electromagnetic field, radiating through space-time, carrying electromagnetic radiant energy. It includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. Types of…
Read more
Latitude of Polaris
Latitude of Polaris Polaris is far from Earth. Thus, light from the North Star reaches parallel to the Earth. And since the earth is round, the latitude of the North Star varies…
Read more
Thin Film Interference
Interference patterns seen in thin films If a thin oil film is floating on the water, you will see a beautiful pattern appear on the oil film. This is because the two…
Read more
Photoelectric Effect 1
Photoelectric Effect The photoelectric effect is a phenomenon where electrons pop out when a light beam is incident on a metal surface. Simply think, the energy of light is transformed into the…
Read more
Photoelectric Effect 2
Photoelectric Effect The photoelectric effect is a phenomenon where electrons pop out when a light beam is incident on a metal surface. Simply think, the energy of light is transformed into the…
Read more
Why does the moon seem to follow me?
Is the moon really following me? How can you explain that the moon looks follow me? In fact, the moon doesn’t follow me. For example, if I go forward with a car,…
Read more