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Self-tutoring about English: the tutor mentions a “new” word. granularity: how small the units of information are that a description considers. Granularity can be seen as how thorough a description is: a report with more granularity will include more details. …
Self-tutoring about electrical terminology: the tutor mentions the difference between “grounded” and “grounding”. As I understand, grounded refers to the return line of a circuit. When the circuit is being used, current will flow through the grounded wire, but it’s …
Self-tutoring about aptitude for life: the tutor recalls some people he never knew. Years ago, when we were new to this neighbourhood, the kids were born – one in 2002, the other, in 2004. I took them out for walks …
Self-tutoring about Christmas traditions: the tutor mentions how he kept one this year. I mention in my Christmas post from 2019 a tradition of last minute shopping at the drugstore. I continued the tradition yesterday evening. There were a few …
Self-tutoring about past events: the tutor mentions an afternoon in winter 1977. Back in PEI, living on the base outside Summerside, we could get some big snows. On the weekends, kids would roam the base looking for the best snowbanks, …
Self-tutoring about past events and situations: the tutor mentions one that’s intrigued him. One morning in December 2006 I was out with my younger son for a walk in the woods. It was sunny and cold, with about an inch …
Self-tutoring about effects from sun: the tutor asks a question he thought he knew the answer to. Apparently, yes, you can get sunburned through a window. The reason is that UV from the sun includes more than one kind: UVB …
Self-tutoring about health: the tutor mentions sun exposure for the purpose of receiving vitamin D. I’ve heard that being outside, in the sun, causes the body to manufacture vitamin D. Supposedly it’s not necessary to get a lot of sun …
Self-tutoring about financial math: the tutor mentions the mortgage interest rate. I was looking at the formula for the periodic payment of a mortgage: P=(-1(r/n))*L*(1+r/n)^(nt)/(1-(1+r/n)^(nt)) where P=payment r=rate n=payments per year (and compounding periods per year as well) t=years Specifically …
Financial math: calculation of mortgage interest rate Read more »
Self-tutoring about Iraq: the tutor mentions its northern, eastern, and southern borders. Iraq is “mostly broad plains” (cia.gov), with mountains to the north (border with Turkey) and east (Iran). Its extreme southeastern border with Iran, starting from about 10 km …