If your left hand positioned so that magnetic lines of force were in hand, and four elongated fingers indicate the direction of current and the conductor,…
(Physics textbook)
Who did not have to memorize this simple rule from a school textbook! A lot of it sunk in memory because talked about tainstvennaya the process occurring in almost any electrical appliance — from a demonstration galvanometer to huge modern motor. The essence of these sacraments is something akin to the great law of Archimedes: on the conductor in a magnetic field and is immersed in the fluid body, the force of buoyancy acts vertically upwards.
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In the development of controlled anti-aircraft weapons of Germany during the Second world war, of course, surpassed all other countries. Work in this direction started there quite early and was based on a high level in the development of German science and technology. September 1, 1942, appeared the Memorandum of the inspector General, defenses of General von Axhelm, supported by Goering, who provided the following directions:
In today’s production is no surprise micron precision. Moreover, in the manufacture of many devices, mechanisms required to “catch” a few hundredths of a micron. That’s why in our days precision, or as it is called in the industry, precision manufacturing requires a skilled worker, so he could work on modern machines, able to produce products of the highest accuracy class.
Bomber Handley Page VICTOR. In January 1947 at a meeting Jen 163— secret of the governmental Committee the UK the decision was made to separate the development of the atomic bomb. It followed the refusal of the Americans to pass the English government materials in design and production of nuclear weapons. The plans of the Committee for the development of the first combat of the sample bomb was given five years, and by 1957 it was supposed to produce about 200 atomic bombs.
Cutting carbon – dioxide laser is the process by which materials are cut with focused, high-energy beam of light that is generated by a carbon dioxide laser. The laser beam is focused on a specific location of the material being cut and the heat generated forms a small, localized melting throughout the thickness of the material.
Sharp and correctly sharpened tool was always a sign of the professionalism of its owner. However, it is important skill to master to bring their production tools to a working state. But the quality of the sharpening tool is a simple touchstone or elektrotochilo is not only long but also difficult. They are replaced by more productive equipment and machines of industrial or self-production.
In Moscow last year in the framework of the “Moscow courtyard” is an accomplishment of territories near houses: broken rekultiviruemye new or old lawns, flower beds, public gardens, installed gazebo and just benches, decorating, sports and children’s playgrounds. Among the latter the most common, but there are unusual complexes with groups of figures based on folk tales. However, even for typical playgrounds are mounted separate simple but fun game structures. One of these and is offered to our readers.
What could be simpler than a rotating roller with teeth! Bumping clods of ploughed soil, he crushes them like a harrow. Peg line Ripper developed members Vorovskogo mug enemskoe school Rashid Salikhov and Adam laiuk. Young designers have made the main working bodies of two steel kolkovich a roller and a rake with long teeth. When you want a superficial loosening of the soil, has some rollers, driven by electric motor. Transport wheels at this time raised above. frame.
If you are tired continue to Tinker with the old battery that constantly has to be recharged at home. You might need to know all about what is on the market today the batteries before you buy a new battery.