Optopus

The final experiment we created for @EdSciFest lets you use machine learning to identify objects using your phone's camera. It includes a basic explanation of how machine learning works, and a smartphone-ready machine learning model: optopus.co.uk/machinelearnin…

@EdSciFest is coming to an end, but there's still time to check out some of our #SmartphoneScience experiments. Check out this fun experiment, which uses a smartphone to record the motion of a cornstarch-based non-newtonian fluid! optopus.co.uk/cornstarch

Have you ever recorded a video in slow-motion and noticed that it appears to be flickering? What you are seeing is the fluctuation of the AC mains power signal. This experiment uses your smartphone's slow-motion video capture to visualise this effect: optopus.co.uk/slowmotion

In this experiment, we use a smartphone to see the infrared light signal generated by TV remotes. It's completely invisible to our eyes, but visible to camera phones they are sensitive to a wider range of wavelengths than our eyes. Try it yourself and impress your friends!

You can make some really cool patterns with this experiment, and you can even use it to see the stress birefringence in plastic bottles or clingfilm. Very cool! optopus.co.uk/3dglasses