As you know, human sleep consists of repetitive cycles of REM and NREM sleep. The average duration of each cycle is approximately one and a half hours. A good rest is sleep, which includes 5 full cycles. Thus, for maximum efficiency people should sleep at least 8 hours a day. The total duration of sleep…

You’ve never been in a situation when together with someone witnessed an event, but somehow different then I remembered, what happened? It would seem that you were there, saw the same thing, but for some reason have differing memories of the event. Actually this happens quite often. And the fact is that human memory is…

Company Aleph Objects has developed a portable 3D printer that, thanks to the specialists in the field of aviation and innovative materials, participating in the development of special software, may be the first device that the military used to print a ready-made drone in the field. Printer LulzBot will allow the US Marines if necessary,…

According to the publication New Atlas, the famous Boeing presented to the public the world’s first unmanned aircraft designed to provide aircraft with the ability to refuel in the air. Unmanned air tanker also has a function of take-off from aircraft carriers and can refuel both military and civil aviation. The new aircraft is a…