Self-tutoring about driving habits: the tutor wonders how many miles per month is common on a vehicle. I was looking around concerning how often to replace various automotive items. The inevitable concepts of mileage duration versus time duration came up. …
Driving, autos: how many miles per month, part 1 Read more »
Self-tutoring about mechanics: the tutor contintues about scrubbing sponges. I mention in my post from August 2 my discovery of the usefulness of scrubbing sponges for scraping rust from the undercarriage of a car. I’ve since discovered yet more uses …
Self-tutoring about electronics: the tutor looks at the resistance of semiconductors relative to change in temperature. Generally, semiconductors, such as silicon, lose resistance as temperature increases. This can be noticed as a negative temperature coefficient, since resistance reacts in the …
Self-tutoring about music: the tutor mentions the key of a song. I forget what song it was, but someone mentioned one time how ironic it was that a bright, cheery pop song was actually in a minor key. Minor keys …
Self-tutoring about people and events from the past: the tutor recalls a situation from elementary school. Back in the Annapolis Valley, the elementary school I attended had an enrollment of around 700, as I recall. I think ten school buses …
Self-tutoring about electronic devices: the tutor mentions thermistors. A thermistor is a device whose resistance is meant to vary with temperature. Some, called negative temperature coefficient (NTC) thermistors, decrease resistance with increasing temperature. Positive temperature coefficient thermistors do the opposite. …
Self-tutoring about lifestyle: the tutor mentions a few channels he listens to while doing chores. Between chores, or else doing dishes, etc, one might like to catch up on some news. What if one is looking for world news from …
Self-tutoring about mechanics: the tutor looks into some performance differences of drum brakes vs disc brakes. I’ve always heard disc brakes are better than drum brakes, which is why they replaced them. However, it turns out that drum brakes may …
Mechanics: why (or when) drum brakes may outperform disc brakes, and vice versa Read more »
Self-tutoring about mechanics and tools: the tutor mentions a question about drive size. Years ago I wanted an 18mm socket for a certain repair, and had to buy it separately: the set I had only went to 17mm. The person …
Mechanics: limit of three-eighths inch drive tools? Read more »
Self-tutoring about cleaning: the tutor mentions the Mr Clean Magic Eraser, Bath variety. I mention magic erasers in my post here. My understanding is that a magic eraser can clean effectively from physical motion rather than chemicals, which is one …
Cleaning: Mr Clean Magic Eraser: the 9-pack, part 1: Bath Read more »