Water Waves
Water Wave When you throw a stone into a calm lake, a circle of concentric waves is created and spreads around. The phenomenon that vibration created in one place spreads to the surroundings is called a wave. If you make … more
Light & Wave Simulation
LCD Display
Color and Eye Recognition Visible light has various colors. Light has a different color depending on the wavelength (or frequency). So, how do people perceive color? Cone cells in the eye’s retina recognize color. There are three kinds of cone … more
Total Internal Reflection and Optical Fiber
Total reflection and critical angle When light enters from a medium with a large refractive index to a medium with a small refractive index, the incident light does not pass through the boundary surface but is reflected at all. When … more
RGB Filter (with Webcam)
If three primary colors of light (red, green, blue) are illuminated in a dark place, how will it look? Notice & Information The following web browsers are currently supported: Windows: Microsoft Edge, Google Chrome Android: Microsoft Edge, Google Chrome iOS: … more
Sound pitch and volume
Height and loudness of the sound When we often say that a sound is ‘low’ or ‘high,’ we are referring to the height of the sound. The height of the sound is completely different from the loudness of the sound. … more
Chord, Just intonation, Equal temperament
This simulation is Works with Edge, FireFox, Chrome, Safari, Opera. does not works with Internet Explorer, Opera Mini. Due to the nature of the program, there may be some beats even in consonant sounds. Chord The sound of two or … more
Standing Waves on a String
This simulation is works with Edge, FireFox, Chrome, Safari, Opera. does not work withInternet Explorer, Opera Mini. String instrument Since string instruments are tied on both sides of the string, the string’s end becomes the vibration’s knot. When the string … more
Standing Waves on a Drum Surface
The standing wave of the drum In a standing wave, the position of the vibration node or antinode does not move. Since the drum has a fixed edge, the edge becomes the node of vibration. The sound varies depending on … more
Standing Wave Synthesis
Reset The standing wave of the drum In a standing wave, the position of the vibration node or antinode does not move. Normally, standing waves are created by overlapping two or more waves. Or it can be created by overlapping … more
RGB Color Combination
Three primary colors of light Red, green, and blue are called the three primary colors of light. You can create any color by adjusting the light of these three colors appropriately. red + green = yellow red + blue = … more
RGB Decomposer (with Webcam)
The image captured on the camera is divided into three primary colors of light. Notice & Information The following web browsers are currently supported: Windows: Microsoft Edge, Google Chrome Android: Microsoft Edge, Google Chrome iOS: Safari Please use with high-performance … more
CMYK Decomposer (with Webcam)
The image on the camera is divided into 4 color colors for printing. Notice & Information The following web browsers are currently supported: Windows: Microsoft Edge, Google Chrome Android: Microsoft Edge, Google Chrome iOS: Safari Please use with high-performance CPU … more