Science simulations

그네 타기의 원리 (토크)

The principle of riding a swing

They know how, but they can’t tell the principle. “How can you go so high?” In the world, there are some principles are difficult to describe in words even if everyone knows…
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Force to move the pendulum

Tension by gravity In physics, tension is the force on a string connecting two objects. Generally, the tension is calculated from both ends toward the center.길이 \( l \)인 진자를 Let’s consider…
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연료 전지

Fuel Cell

Fuel cell A fuel cell is a device that converts chemical energy into electrical energy in a reaction in which hydrogen is oxidized to produce water. Fuel cells have less heat loss,…
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변압기 Electric Transformer

Electric Transformer

* We assume an ideal transformer where the excitation current is “0”. A transformer is a device for simply changing the voltage of an alternating voltage. Transformers make it easy to change…
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Integral in physics

Definite integral In the 2D coordinate plane, definite integral is a way to find the area of a graph. The only simple way to get the area as the product of width…
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케플러의 법칙

Kepler’s law

Kepler and Tycho Brahe There is an astronomer who must be mentioned before talking about Kepler (Johannes Kepler 1571 ~ 1630). That’s Tycho Brahe. Tycho Brahe (1546-1601) is a famous Danish astronomer.…
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토리첼리의 실험

Torricelli’s Experiment

* You have to wear gloves when handling mercury. Torricelli’s Experiment The first person to measure the magnitude of air pressure is Italian scientist Toricelli. He was filled with mercury (Hg) in…
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망델브로 집합 Mandelbrot Set

Mandelbrot Set

  This simulation supports both pinch zoom and mouse scrolling. We recommend using the Chrome browser. (to get more processing speed) Imaginary number An imaginary number is consisted with a number that…
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스피커 Speaker


A changing electrical signal is fed to the voice coil of a loudspeaker, which lies within the magnetic field of a permanent magnet. The signal in the coil causes it to behave…
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무슨 색으로 보일까?

What color does it look?

Three Primary Colors of Light Red, green, and blue are called the three primary colors of light. By combining the three colors of light properly, you can create any color. Red +…
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Heart Pulse Detector

Heart Pulse Detector

How to use the Heart Pulse Detector Place your finger on the camera and make the entire camera screen red. This application uses the phenomenon that the color of the finger periodically…
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