Drop the smartphone along an array of magnets and analyze the recorded magnetic field to extract the linear acceleration. (Note, that there is a simple an alternative version using acoustic detection.)
Continue reading “Free fall (magnetic detection)”
The smartphone is mounted on an air track and accelerated by a weight on a string. An array of magnets is used, so the linear acceleration can be explored by measuring the magnetic field.
Continue reading “Linear acceleration on an air track”
The experiment “Magnetic field” just gives the raw data from the phone’s magnetometer. On most phones you can switch between calibrated and uncalibrated data in the menu.
Set up a bunch of magnets as marker, so you can use this experiment to measure the speed and distance while moving along these magnets.
Calculates and displays the FFT of magnetometer data. The strongest frequency is given as well.