5.4 Electrical Conductivity Measurement
This method includes electrical impedance spectroscopy (EIS) and dielectric analysis (DEA). The physical state of a material is measured as a function of frequency in EIS and the frequency ranges from 100 Hz - 10 MHz. It is simple and easier technique used to estimate the physiological status of various biological tissues49-52. Experimental frequency response of impedance is characterised by electrical equivalent circuits of materials. The physical properties of materials can be quantified by monitoring the changes in parameters at the equivalent circuit, among various equivalent models proposed53-54. DEA measurement is used in high frequency areas, generally 100 MHz - 10 GHz. DEA is used in moisture estimation and bulk density determination
So a overripe banana is an interesting high-pass filter, though the big takeaway is the conductance vs ripeness.
So if you want to test if a banana is ready to eat, hook it up. If the music is too loud, it is ready. Too quiet, and it’s not time.
Behold:
https://www.researchgate.net/figure/Electrical-conductivity-of-banana-at-different-ripening-stages-with-the-help-of_fig5_317486785
So a overripe banana is an interesting high-pass filter, though the big takeaway is the conductance vs ripeness.
So if you want to test if a banana is ready to eat, hook it up. If the music is too loud, it is ready. Too quiet, and it’s not time.
The moment you give me a link to a banana tree/MP3 player/ripeness tester/EQ:
I only listen to music with overripe bananas. It sounds best that way. Copper wire just doesn’t sound as good.
You get much better conductivity with plaintains because the cross-sectional area is bigger.