My story will consist of three parts.
1 part. Grounding system (General information, terms and definitions).
Part 2. Traditional methods of construction of grounding devices (description, calculation, installation).
Part 3. Modern methods of construction of grounding devices (description, calculation, installation).
OUT OF THE ORDINARY — SPECIAL
Many products have elements of quick fixing which uses a special manual nut or screws with knurled head. Losing such detail — it is simple, but to pick up then another of the same — much more difficult. It is easier to make such a fastener from the usual, standard: apply to the faces of Read more…
As you know, strawberry – plant capricious. Strawberry beds require frequent weeding, trimming the mustache, and when the berries begin to ripen, experienced growers pour on the ground sawdust to protect delicate berries from contact with the ground. Muscovite M. Listratova for several years, planted seedlings in cut-off top of plastic bottles filled with fertilized earthen mixture and partially recessed in the ground. To care for plants is not an example easier, and full of berries from this patch it is possible to collect much more than usual.
As a longtime reader of Your magazine, a lot of interesting in this read. Finally, I decided to write myself: maybe useful to someone my experience of construction.
In recent years, developers of electronic equipment for ham radio became available to the newest element base of leading foreign and domestic manufacturers, allowing you to create new versions of familiar domestic devices, significantly increasing their performance.
In childhood, many have probably experienced the delight of the books of Jules Verne. The romance of traveling on the Nautilus is impossible to forget even after years. Today the submarine with the same for her periscope is of interest to those who in the future will be the captain. For making a simple periscope need not so much – two vanity mirrors (4) about the size of 50×70 mm and thin-walled durable material (e.g., wood or plastic) from which to make the walls of the optic tube (1), which are adjacent the top (2) and bottom (3) of the knee. Them at a 45° angle set of mirrors. In the process of manufacturing the device can be guided to one of the shows the structural schemes. The length of the spotting scope in the 300 – 400 mm can be considered sufficient. The periscope can be equipped with rotary device and handles that will allow you to feel like a real submariner.
