Measure
Video motion analysis (Multi-flash photography, Stroboscope)
This app is Web-based software that converts video footage of an object’s motion into multi-flash photography. This program analyzes the movement of objects captured on video frame by frame. It may not work on Apple devices … more
Buoyancy comparison
Why is the submerged volume important to understand buoyancy? It is so famous that the 3rd-century Greek philosopher Archimedes shouted “Eureka!” and ran out of the bathhouse naked. （What did Archimedes find out? – Quotations from … more
Video Motion Analysis (Screen Pointing)
Range X min X max Y min Y max This app is a web-based software that analyzes the motion of objects recorded in video frame by frame. This program analyzes the movement of objects captured on … more
Movement of an object suspended from a pulley
Movement on the pulley Two objects are connected by a string on a fixed, frictionless pulley and are moving together. In this case, the mass of the string and pulley is ignored. Since tension \(T\) and … more
Pattern Measurement (Measure the length of a specific pattern in an image)
About this app… This app can measure the length of a specific pattern that appears in an image (e.g., double slit pattern). You can upload and analyze images you have taken yourself. An object that can … 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
Micro:bit Capacitor Experiment / Measurement of charging time
Charging and discharging of capacitors A capacitor is a component that stores electrical energy in the form of an electric field. Assemble the capacitor and resistor on the breadboard, as shown below. When you press the … more
Micro:bit Wireless Voltmeter (Direct connection, 3.3V max)
You can measure the voltages between 0 and 3.3V with micro:bit. Connect a 4.5V battery or USB power source to the micro:bit (3V batteries cannot be used). Do not measure excessively high voltages. It can damage … more
Javalab Logger 3D Frame
We printed a plastic frame to use Javalab Logger (Microbit data logger system) conveniently. Microbit, expansion board, and batteries are integrated into one frame, making it more convenient. We provide the 3D printing data below. Here’s … more
Buoyancy Experiment
The fluid in the beaker is water, and its density is assumed to be 1 g/mL. The volume of the object is assumed to be 100 mL. Buoyancy When we wear a life jacket, our bodies … more
Micro:bit Ultrasonic Rangefinder
Ultrasonic rangefinder This sensor measures distance using the return time after ultrasonic waves are emitted. Please use the HC-SR04P (or HC-SR04+) sensor for 3V and 5V. Please note that 5V-only HC-SR04 will not operate. Connect the … more