It is simply impossible to introduce students frontally to the rules of calculation and programming on a microcalculator if there is no enlarged demonstration analogue of it. Our magazine has already described a similar teaching aid intended for use in an ordinary school classroom (see “M-K” No. 4, 1986). Continuing this topic today, we acquaint Read more…
After fascist forces occupied Greece in April 1941, the British had no doubt that they would soon try to land on Crete. Fearing a seaborne landing, almost the entire British Mediterranean Fleet was urgently assigned to the island’s defense from the sea. But the Nazis, who held air superiority, “jumped over” the naval patrols and Read more…
In modern standard apartments, the hallway is usually small, so the furniture placed in it should be multifunctional. A furniture wall unit meets this requirement most fully. It may include a wardrobe for outerwear, a coat rack, a place for shoes, and mini-storage for various items, household and sports equipment. Unfortunately, wall units available for Read more…
Small tillers with a rotary cutter as the working tool fare well: biting into the soil with their rotating blades, the cutter not only loosens the ground but also helps the tiller move forward, as if pushing it along. A motor plow is another matter: the share that cuts and turns over a furrow of Read more…
When my second child was born, we once again faced the problem of washing diapers, baby undershirts, and romper suits. Wash by hand? Long and tedious. Wash in a large washing machine? That is completely uneconomical — neither in terms of detergent consumption, nor water and electricity use… And a large machine also takes quite Read more…
For a long time I have been using a long-purchased single-axle hand utility cart (unfortunately, information about the manufacturer has not survived). But, as I recall, the cart’s passport listed the following data: load capacity — 25 kg, mass — 6.5 kg. The cart is made, as they say, conscientiously; the design is reliable, it Read more…
Any rural housewife knows how much time and effort it takes to prepare enough chopped greens and vegetables for livestock and poultry feed, or to process berries for preserving with sugar. A very simple device can make this work much easier. Just connect a meat grinder to an electric drill, and in 20–30 minutes about Read more…
For a successful fishing trip it would be nice if good tackle were joined by luck, and also, as they say, “you have to know the places.” And while luck is an unreliable thing, I did know the places where fish could be found. Getting to them, however, was often difficult even for someone on Read more…
The mini-system I developed is designed for automatic maintenance of set air temperature and humidity in thermal cabinets, closed boxes, as well as in greenhouses or other rooms. Its design is mainly modular (Fig. 1); assembly is quite within the capabilities of anyone who has ever put together even a simple electrical or radio circuit Read more…
The woodworking machine presented to the readers’ judgment I designed myself, fabricated with my own hands, and now successfully use when building a house on my plot. I am becoming convinced how successful the design turned out: compact, technologically sound, and, I believe, quite suitable for “replication.” The machine is so simple that an overly Read more…
