The article describes the main disadvantages of implementing the "smart home" system in the construction or repair of a house. After reading this article, you will not want to make a smart home system!

Nowadays, automation systems "smart home" are becoming quite popular. Advertising screams about the convenience, economy, comfort and many other advantages of such systems. An uninitiated layman sometimes does not imagine what problems he may encounter when buying such a system for his home. Consider some of the shortcomings of "smart home" in more detail.

The first, and main, drawback of a smart home is the high cost of equipment, its installation and maintenance. This aspect repeatedly covers the cost of the entire effect of energy savings ...

Hybrid cars are becoming increasingly popular all over the world. This is caused not only by their fuel efficiency, but also by environmental requirements, which are constantly being tightened, and hybrid cars reduce emissions of unburned hydrocarbons and nitrogen oxides into the atmosphere by 85%.

Most hybrids currently have two engines. This is an internal combustion engine (hereinafter ICE) and an electric motor. An electric motor, as a rule, has less power than an internal combustion engine, but still, it requires heavy batteries or fuel cells to operate. They take up a lot of space in the car and increase its weight. For example, Toyota Prius II, which is considered one of the best hybrids ...

LED lamp operating experience

We are living in an era of unbridled and unscrupulous growth of electric tariffs, and while Chubais’s thinking will dominate the economy, the situation will not change.

For example, we can recall that over 10 years, electricity tariffs have increased 20 times. Apparently, this is not the limit. The only way to counter, with the exception of theft, is to save energy.

Just a couple of years ago, everyone was hearing “energy-saving” lamps, i.e. conventional luminescent, only with an electronic starting and adjustment device and with the common base E14 and E27 ...

An article on the negative impact of energy-saving lamps on child health. Proper lighting of the workplace of the student.

Solving the problems of organizing a student’s workplace is of paramount importance because schoolchildren, especially elementary school students, spend a lot of time at their workplace.

The main element of the student’s workplace, ensuring its convenience and practicality, of course, should be recognized as general and desktop lighting. There are a lot of options for such lighting, and advertising and cunning managers are particularly persistent in using energy-saving lamps as such ...

History, experiment and practice of introducing the transfer of electrical energy through a single wire of minimum cross-section without loss.

An experiment conducted by the Serbian scientist Nikola Tesla back in 1892, still haunts domestic scientists. The motivation is completely understandable. If you can use only one and very thin conductor instead of two, then this is a huge savings in copper and aluminum. If we take into account that in our country, only last year, the cost of copper wires doubled - a monument of copper was erected to successful inventors during their lifetime.

Successful experiments in Russia were carried out in 1990, when the engineer Stanislav Avramenko managed to transfer electric power through a single-wire line about 3 meters long, sufficient to operate a 1.3 kW load ...

Everyone knows that many appliances have a negative effect on health. This is especially true for devices with a wave principle of operation.

We all know that in addition to the visible benefits, many electrical appliances can imperceptibly harm human health. This primarily relates to devices based on the operation of electromagnetic waves.

One of such devices is a microwave oven, which is a source of medium-frequency waves. The permissible radiation level of the furnace is 10 μW / cm2.

Usually at a distance of half a meter for all products this level corresponds. But it can increase due to improper transportation or factory defects. Waves can pass, for example, through the gap between the door of the stove ...

The doctrine of electromagnetism has been criticized for a long time, speaking about it: incomprehensible, complex, contradictory.

Indeed, there are about a hundred paradoxes in it. However, their theoretical analysis, so to speak, theorization, refinement, despite the usefulness of such a lesson, sometimes still smacks of something cabinet, speculative. In such cases, one involuntarily wants to ask: is there anything new in practice, in experiments, that would even astonish the most experienced theorists?

I must say that unusual experiments, nevertheless explainable within the framework of the existing doctrine, can be counted with a dozen. Among them there are those who finally open the way to a new electrodynamics - clear, simple and logical, devoid of paradoxes.

Let's talk about both. Extremely spectacular look "motors" in which between the electrodes, where the high voltage is connected, a variety of objects rotate frantically. One such wheel was built by Franklin. The principle of its operation is very simple: charges flowing from the electrodes onto the rotor are repelled by the Coulomb forces ...

Does the perpetual motion machine still exist?

According to the scheme below, a real and fully functional model of a perpetual motion machine was developed.

The diagram shows a more simplified connection of the working elements, namely, the connection of the engine anchors and generators and a single aggregate shaft, in real execution a belt drive was used. The generator and electric motor were fixed so that when starting the electric motor could simultaneously rotate the generator shafts.

To create a prototype of the engine used a conventional car battery and the same generator 1 with a standard 12 voltage. Generator 2, relative to generator 1, was made smaller by the weight of the root, respectively, thereby it produces less working energy and reduces the load on the electric motor ...