Self-tutoring: the tutor inquires about the origin of the popular saying “That’s all she wrote.” Apparently “That’s all she wrote” originates from WWII: if an American serviceman received a letter saying only “Dear John,” he’d been deserted by its writer. …

English, history: whence the saying “That’s all she wrote”? Read more »

Self-tutoring with Excel: the tutor shares a tip about extending text over multiple columns. Let’s imagine you want to title a spreadsheet. You probably want to center the title at the top: likely it will run across more than one …

Spreadsheets: Excel: how to write text across multiple columns Read more »

Tutoring English, familiar words can hold surprises. The tutor mentions such a case with the words sanatorium and sanitarium. I almost never hear sanatorium, but rather, sanitarium. They have the same meaning: a facility promoting patients’ recovery, possibly from long-term …

English: sanatorium and sanitarium Read more »

Self-tutoring about color theory: the tutor mentions perhaps the first color wheel. Apparently, Isaac Newton devised a color wheel in 1666 – perhaps the first ever. It was based on red, green, and blue, from which he decided all colors …

Art, color: the first recorded color wheel? Read more »

Self-tutoring about electrical consumption: the tutor looks for the typical power rating of baseboard heaters. Investigating energy consumption, I was compelled to inquire about the wattage of baseboard heaters. Baseboard heaters, because of their variable length, are often discussed in …

Electricity: wattage of baseboard heaters Read more »