You enter the room, and suddenly light flashes, “alive” is a radio or a tape recorder. To make such a “miracle” the strength of the capacitive relay (the diagram in the figure).
Wheelchair wooden stick, even if it is with a rubber tip in the ice can bring, slipped on the ice surface. However, if the end to drill a hole and insert a sharp metal rod from the cane will be versatile for any season. V. GOLOVASHIN, Rybnoe, Ryazan region.
The appearance in the USSR Armed Forces helicopter Mi-4 with a lifting capacity of 2000 kg originally destined to transport paratroopers, immediately attracted the attention of numerous security forces, and GVF. Was no exception and the Navy. Before him opened a wide perspective on the use of Mi-4 not only for the delivery of paratroopers, but also to perform search and rescue operations at sea, minesweeping, search of submarines (the threat of which is constantly growing) and as a torpedo bomber.
On the sixth of December, 1932, eleven months after the start of the Gorky automobile plant, with its conveyor descended first cars GAZ-A. Cars these, very simple and unpretentious, quickly won the hearts of drivers. In fact, their distant relatives were already well known in our country.
Propose the layout diagram of the folding kayak with a rigid hull or a light boat in the yard, It consists of middle main part and two detachable sections — bow and stern, the kayak is still detachable deck (Fig. 1). All items in the Assembly must quickly and hard enough to communicate with each other.
(The end. The beginning in № 5, 1975)
Isn’t it interesting microntroller built young designers syut city Shostka in Sumy region? “It is easy and convenient to operate by the authors of the letter. The wheel we took from the bike, a column from a motorcycle “Java”, Faro — bike wheels — from the map. Our machine differs significantly from microntrollers, the description Read more…
Control line model plane-vysokoplan. The first simplest kordovye model. made of pair plates, quickly bored novice modelers — they, of course, want to raise in the air like a real airplane.
The mid 50-ies of XX century marked the beginning of the end of British naval power. Powerful, but not conformed to the new reality fighting ships of world war II were annually given up on scrapping dozens. The size of the fleet decreased with great speed: to build new frigates are only marginally influenced this sad for the pride of the nation process.
For works in chemical laboratory hydrogen is produced usually by the reaction of zinc with hydrochloric acid (HCL). Sometimes you need a small amount of gas, and 1 g of zinc makes about 400 ml of hydrogen, so that, using part of it, the rest have to release into the atmosphere.