Chemistry: surfactants, part 1
Self-tutoring about everyday chemistry: the tutor begins about surfactants. I mention in my post from april …
Tag: cleaning
Mechanics: is hunting season over, for now?
Self-tutoring about mechanics: the tutor mentions the improved state of the lawn mower. I mention, most …
Mechanics: scrubbing sponges
Self-tutoring about mechanics: the tutor contintues about scrubbing sponges. I mention in my post from August …
Materials: oily film on old unused rubber
Self-tutoring about materials: the tutor investigates the oily deposit on an old rubber mat. In a …