Sastrayan 2026 Demos

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Sastrayan 2026 Demos

Magnetic Levitation experiment

Made a bunch of demos at the dept of physics for an open house event.

  • Experiments with High voltage : Tesla Coil Costs 5K rs and comes with 2 small gas filled bulbs : Buy on amazon

  • Gas discharge tubes : Bought a set of 18 different tubes for 9.5K and a power supply for another 4K Volunteers demonstrated discharge glows, and also showed the discharge spectra using a portable spectrometer.

  • Fiber optic showpiece : The fiber toy(100rs from a roadside vendor) was plugged into a portable spectrometer(eye watering 1.7L from Ocean Optics) to demonstrate spectrum different colours.

  • Optics demos : Used optics kit designed by Makerspace Belgaum to show converging and diverging beams. (Free from Praveen and Gautam at Makerspace Belgaum)

  • Spectrometer dismantling : Opened up a Perkin Elmer spectrometer with the Visible Lamp on, to show the various parts. Thank you Pradyummnan sir .

  • Time of flight : Measure time taken for an object in free fall by using SEELab3 , and verify S=0.5gt^2

  • Sensors : Showed pressure, temperature and IMU sensors with SEELab. measure time period of a pendulum using the gyroscope sensor.

  • 3 Phase AC generator : 3D printed and designed with FreeCAD. Readings taken with SEELab3 for a magnet spinning at the centre of 3 coils at 120 degrees

  • DiodeIV vs Temperature : SEELab3 IV characteristics in 3D . Used a lighter to heat diode and observe change in knee voltage.

  • Magnetic field gradient : Raster scan a magnetometer to plot field lines. Used a laser engraver for the XY gantry, and an HMC5883L magnetometer with SEELab3.

  • Thermodynamics : Expanding balloon inside a transparent vacuum chamber (Dessicator)

  • Sound : Show FFT of sound. Convert an image to sound and reconstruct it.