The light bulb in the suspended ceiling burned out, knocking out a machine gun. He turned on the machine, replaced the light bulb - it again burned out. After that, it turned out that the switch of the entire series of bulbs stopped working - the entire line is on and on. Well, something was short, a clear stump. Usually in such cases, nothing is turned on, but here - nothing is turned off.

I called the local housing office (or whatever). Although Zhekovsky electrician to trust to do something in the apartment - obviously did not want to. They are usually rare jerks (although there are happy exceptions), and they don’t know how to do a damn thing. Having learned about the problem, the Zhekovskaya dispatcher told me the same thing - they say they won’t figure it out. Uselessly. To the question of where to go, the dispatcher advised a rather large office, which has a website on the Internet and which solves a lot of all kinds of problems - directly Mr. Wolfe.

I call the office, please send an electrician. The dispatcher finds out what happened. I explain. Further dialogue. (Note that I haven’t said yet that an electrician should go specifically out of town - here usually good sums are still additionally covered up, but here it was immediately interesting even without a countryside.)

(Dispatcher) ...

For the first time, the electrification of liquids during crushing was seen at waterfalls in Switzerland in 1,786. Since 1913. the phenomenon is called the balloelectric effect. The effect of electrification is observed not only at waterfalls in open areas, but also in caves. Microscopic droplets of water and molecular complexes, which, when crushed, break away from the water surface and are carried into the environment, charge the air at the waterfalls. The most significant effect of air electrification is observed at the largest waterfalls in the world ...

Off the coast of the seas, air acquires a positive charge due to the spray of salt water. On the surface of the seas and oceans, water spray begins at a wind speed of more than 10 m / s, when scallops of foam appear on the waves. The ratio of positive charges to negative charges in the air above the Black and Azov Seas reaches 2.04 with a stormy sea, and 1.48 with swell.

The conqueror of the Jomolungma N. Tensing in 1953 in the area of ​​the southern saddle of this mountain peak at an altitude of 7.9 km above sea level at -30 ° C and a dry wind of up to 25 m / s observed strong electrification of icy canvas tents inserted one into the other. The space between the tents was filled with numerous electric sparks ...

Many would be happy to have a “smart home” - so that everything would turn on and off “according to pike orders”. But not everyone can afford the complete set of this miracle of technology. And not everyone needs it in full. To increase the IQ of their apartment, two or three timers will be enough for someone.

You do not need any specialists to install them - just plug the timer into a power outlet, and any connected electrical appliance with a capacity of up to 3500 kW will begin to work according to a given schedule.

The timer will turn on the kettle on time in the morning so that you can drink coffee immediately after waking up. He will also turn off the TV if the audience falls asleep in front of the screen before the film ends. And having programmed the time of your favorite programs, you will never miss them, carried away by business. The compressor in the aquarium will also turn on and off like a clock - without your participation. And as many times as necessary ...

“Ilyich’s bulb” is the colloquial name in the USSR for a household incandescent lamp used without a plafond.
The phrase “Ilyich’s bulb” appeared after V. I. Lenin’s trip to the village of Kashino in 1920 on the occasion of the launch of a local “power station” with a wiring network made of old telegraph wires.Initially, the concept of “Ilyich’s bulb” referred to the electrification of Russia, especially rural areas.
The trip of V.I. Lenin to Kashino took place on November 14, 1920 and was timed to the holiday in honor of the opening of the power plant. The construction of the local power station and the power distribution network was inspired by the speech of V.I. Lenin at the XX Congress of the Komsomol, where he pointed out the need to develop an economy based on electricity. The distribution network was built at the expense of the agricultural partnership by the residents themselves in their personal time from a telegraph wire that had not been used for a long time. Dynamo car was made in Moscow. In one of the houses Vladimir Ilyich had a conversation with local peasants. After the conversation, V.I. Lenin and N.K. Krupskaya took pictures with the peasants, and then he spoke at a rally.

This trip had a big impact ...

A young man who had barely managed to take off his diapers, but already with a “mobile”, or a granny, in whose shopping bag a cell phone stumbles, no one is surprised today. The sign of the time, its attribute, as familiar and indispensable as a computer, television, electrical panel in the hallway. All this creates an electromagnetic background, completely invisible and inaudible. How environmentally friendly is it?

Science does not know, but warns ...

Some scare us with cancer, sexual impotence, dementia and miscarriages. Others reassure - it's okay, they even treat magnetic fields! In general, all the poison and all the medicine, only the dose makes it this or that, as the ancient Aesculapius said. The experts of the Research Institute of Occupational Medicine of the Russian Academy of Medical Sciences and the Center for Electromagnetic Safety at the Institute of Biophysics of the Ministry of Health of the Russian Federation took up the establishment of this "dose". To make it clearer: all devices consuming electricity, except for electric fields, also create magnetic ones.

These are high-voltage and cable lines, switchboards, transformers and wires of power supply systems, trolleybuses and trams, subways and commuter trains, household appliances included in the socket ... And if there are no problems with electric fields, they have been studied for a long time and are quite easily shielded (enough obstacles in the form of reinforced concrete wall or metal mesh), says the deputy director of the Center Eugene Bicheldey, science so far knows little about the biological effect of magnetic fields, and it is technically very difficult to defend against them and expensive. A person without special devices is not able to recognize their presence - he does not have such a sensory organ. Although science has established that magnetic fields can adversely affect living organisms. But how dangerous are they ...

The first to discover was Luigi Galvani. This is what a funny incident happened to him. He, you see, was a foodie. However, there were enough gourmets without him, but Galvani was also a dude - this is the combination of the whole thing. He once demanded that to eat the frog legs he was given not some silver knife and fork, but that the knife - okay, silver, but the fork is certainly platinum. The waiter, anticipating entertainment, did not argue. As soon as Galvani poked his guns on his unfinished paws, this delicacy made an attempt to stick from a plate. “What the ... what ... what?” Galvani was stunned. “Yes, you just galvanize them, señor!” The waiter explained to him, choking with laughter. So electrophysiology was born ...

In his anatomical Galvani, he killed an entire batch of frogs and set about scientifically set experiments. He made a stunning conclusion at that time - the frog, they say, has the same “animal electricity” as the electric stingray.“Oh, times, oh, morals!” Alessandro Volta, who loved animals, and frogs, especially moaned, learning about this. “It's not a frog, but two different metals!” To prove his words, Volta demonstrated an elegant experience in which, unlike Galvani, he wittily used his own language instead of a frog.

By the way, the language did not require cutting and dissection for this; it worked well already. “And yet unconvincing,” Galvani retorted, and in order to prove his point, he made a frog over such that the prepared sample fluttered without touching any metals there. This Volta could not bear, and therefore he invented his famous pole - a source of contact voltage. It is possible that this invention saved not one thousand frogs from a premature death, since Galvani was thinking about their quartering on an industrial scale in order to mount the world's first power station - at the court of the Pope. Nevertheless, the struggle between the “Galvanians” and the “Voltians” continued for quite some time. And only V.I.Lenin subsequently established that, not owning a dialectical approach to the issue, both of them flogged nonsense.

But the voltaic pole - this is not a glass disk with fur lining, you do not need to rotate it! In order to properly mark such a discovery, Volta invited his foreign friends Om and Ampere to a beer. Having drained his mug, Volta ...

The most significant in car batteries are the following three indicators:

Firstly, it is a capacity expressed in ampere hours. It characterizes the ability of the battery to give a certain current for a certain time. For example, a capacity of 40 ampere-hours means that the battery can give a current of 1 ampere for 40 hours (or 2 amperes for 20 hours, etc.)

Thirdly, reserve capacity. This parameter, especially revered in America, shows the time interval (in minutes) during which the battery is capable of producing a current of 25 A (i.e. for how long it can replace a failed generator).

What is inside?

A standard car battery consists of six 2-volt cells, which gives 12 volts at the output. Each element consists of lead grating plates coated with an active substance and immersed in an electrolyte. Negative plates are coated with finely porous lead, while positive plates are coated with lead dioxide ...

Everyone knows that no one is safe from the effects of storms, hurricanes, storms and other natural disasters. Therefore, it should be soberly aware that the next rainstorm with the same probability can leave without light both a small office and a huge corporation. What to do in the event of a cable break or some kind of malfunction? Call electricians? Or rent a robot that independently does all the work much faster, and possibly better. Say fiction? Of course, who will develop robots-electricians, if there are more interesting applications for these silicon creatures. And you don’t have to go far - robotic singers and bartenders, nannies and teachers, doctors, toys. And here I do not agree.

Scientists have created a robot that, in stand-alone mode, will be able to independently test or diagnose many kilometers of the power cable, identify problems and possibly even determine “preliminary” malfunctions, which, in the future, can cause network problems.

Professor, electronic engineer Alexander Mamishev told the press that such a development is the first in the industry ...