Convex Mirror & Concave Mirror
Real image and virtual image Looking at an object, we feel there is an object in it. By the way, if you feel that there is something, we say there is an ‘image’, even if there … more
Light & Wave Simulation
Convex Lens & Concave Lens
Real image and virtual image Looking at an object, we feel there is an object in it. By the way, if you feel that there is something, we say there is an ‘image,’ even if there … more
Spectrum Analysis of Sound
This simulation analyzes the sound around you and displays it as a spectrum. The simulation works by recognizing the surrounding sounds. In the case of PC, please grant permission to use the microphone. Voice data is … more
Sound pitch and volume
Hz 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 … more
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 polarizing plate materials absorb only the electric … 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 … 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 … more
Waves made with springs
Waves in spring When the left end of the spring vibrates, the vibration is transmitted to the other end. A spring can vibrate horizontally or vertically. Fixed-end reflection When a wave reflects off a fixed-end, the … more
Sound Analysis (Finding the main frequency, measuring the Doppler effect)
What is the main frequency of the sound around us? Please allow the simulation to request microphone access. If you have set up the microphone or refreshed the webpage screen, touch anywhere on the screen once. … more
Waveform and timbre of sound (Sound analysis program using a microphone)
This simulation shows the surrounding sounds as waveforms. Please turn off the silent mode on your mobile device to allow microphone detection. For PC, please allow permission to use the microphone. No voice data is stored … more
LCD Display 2
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 … more
Spectrogram
This simulation analyzes the sound around you and displays it as a spectrum. The simulation works by recognizing the surrounding sounds. In the case of PC, please grant permission to use the microphone. Voice data is … more