The G11 ESS class recently went to Dansui MRT to collect soil resistivity data for their field work. The instruments are quite simple and the students collect data so that their non-destructive analysis of the soil could be complete. The experiment does involve passing DC currents of electricity and measuring the results from both a voltmeter and amp-meter.
Joshua prepare wires, as Kelly and Ting prepare pins at the correct distances on the grass. The MRT in the background may affect their reading. They were curious as to how it may affect their readings.
Here Steven, Tim, Vincent and Shawna prepare distances, string out wires and prepares batteries and instruments ready for measurements. It was raining on and off throughout their field world. I told them the field work is on, rain or shine, so bring the appropriate clothing and weather gear.
Here Yvonne, Roni and Victor worked together at different locations to get their measurements. Roni was able to speed up their progress when she recommended to the group to do the longer distances first, afterwards, the wires could simply be shortened to get the closer spaced distances.
What can we learn from the soil?
Dutch-Pakistani poet Ehsan Sehgal (b. 1951) once taught us a lesson:
As soil flourishes and nourishes every subject, regardless of distinctions, which beautifies and colours the blue planet; similarly, be the same to dignify and glorify your thoughts, character, and life.