The post discusses a personal experiment involving a borax or baking soda rectifier where the author reflects on their school days experimenting with basic electronics using homemade materials. A comment from another user highlights the interesting concept of variable capacitors and mentions historical methods of dimming lights. There is also curiosity about the phenomenon of negative resistance observed in this context, which could imply intriguing electrical properties when using certain materials and setups. Users share their experiences leading to discussions about liquid-state electronic devices against traditional solid-state counterparts.