In the description of an unusual experiment published in Physical Review Letters you may read about the invention of a lamp possessing the unbelievable coefficient of performance that exceeds 100 %. The Law of conservation of energy wasn’t violated however. The matter is that is wasn’t the usual electric incandescent lamp but the device that is similar to semiconductor radiation emitting diode. The astonishing effect of the great performance coefficient was achieved while this device was working in the mode of the lowest radiation and the highest temperature.
Progress never stops. 10 years ago we could hardly imagine great multifunctional phones and computers would ever exist. Nowadays it’s quite hard to surprise a modern man: he seems to have seen and tried almost everything. We buy new equipment, throwing out with no regret our good old computers which stood us in good stead for many years. But we can give our old ‘friends’ the second life, transforming them into something useful.
For example, you can use your old computer as a server, connecting it with the other computers in your house: this way you will be able to save necessary important files to avoid their loss. It can be also used as an element of multimedia system: it’s pleasant to watch movies and TV shows or listen to music.
I wonder, why do people tend to need tablet computers lately? Is it for the purpose of having some rest from the reality and human live communication? We used to stay at home in front of our stationary computers and were surfing through the web all evenings long and now we do the same at a local restaurant or on a bench in a park provided that we have 2 minutes to spare. It is most likely that we will not have any free time anymore soon.