More recently, autonomous energy systems for homes have seemed fantastic. Today they are confidently entering our lives. Leaning Europeans have long been using the so-called solar panels to provide their homes with electricity. In Russia, such systems are still gaining popularity. This is due to a rather high cost ...

The law of conservation of energy almost buried the dream of a perpetual motion machine. However, at the disposal of man there is another source of inexhaustible and accessible energy for everyone - the Sun. Engineers and craftsmen have developed a number of excellent devices to use this renewable resource for the improvement of residential buildings. One such useful construct ...