## 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 float on the water … more

## Archimedes Buoyancy 1

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 middle school science textbooks） … 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 sensor’s Trig terminal to … more

## Principle of Speed Gun

Doppler effect Electromagnetic waves (or sound waves) come into contact with another object while traveling; part of the wave is absorbed or reflected. A moving ball likewise absorbs or reflects some of the incoming waves. If the ball were moving, … more

## General Relativity of Gravity

* After setting the small object’s mass, position, initial velocity, and initial direction of movement, turn on the ‘Run’ checkbox to start the simulation. * The gravitational constant of the celestial body were assumed to be ‘1’. General relativity General … more

## Micro:bit Wireless DS18B20 (waterproof) Thermometer

You can use a Micro:bit as MBL by connecting a DS18B20 temperature sensor. If no sensor is connected, the Micro:bit built-in thermometer value is output. Thermal equilibrium experiment between hot and cold water The sensor connects to the P1 or … more

## Micro:bit Wireless Maze

This is a game using the micro:bit’s 3-axis acceleration sensor. Updated 2023.10.27: Score recording function added. Parts list The parts list is at the bottom of the link below.

## Micro:bit Wireless Built-in Thermometer

You can record the temperature changes with the Micro:bit’s built-in thermometer. Micro:bit only works with v2.00 or later products. Please use the Chrome browser if possible. It may not work in the in-app browser of social media (e.g. Facebook). It … more

## Micro:bit Wireless Accelerometer

You can use the Micro:bit as an MBL acceleration sensor. This video is played without sound. Micro:bit only works with v2.00 or later products. Please use the Chrome browser if possible. It may not work in the in-app browser of … more

## Micro:bit Temperature, Atmospheric pressure sensor (BMP280)

You can connect the sensor to the left or right side of the board. (Where it can be connected varies depending on the connector type.) When connecting a sensor, the (+) and (-) poles of the power supply cross each … more

## Micro:bit Temperature, Humidity, Atmospheric pressure sensor (BME280)

You can connect the sensor to the left or right side of the board. (Where it can be connected varies depending on the connector type.) When connecting a sensor, the (+) and (-) poles of the power supply cross each … more

## Javalab Logger (Micro:bit data logger system) + Parts List

Javalab Logger – Intelligent Science Lab Solution Javalab Logger is a wireless MBL (Microcomputer Based Laboratory) system using the micro:bit. It runs on the web browser, and there is no need to install a separate program. This system requires a … more