Stealth airplanes do not refer to airplanes that are invisible to the naked eye. Instead, they use various technologies to weaken various radar reflections, infrared…
In many literary and film and television works, invisibility is often an important ability of the protagonist. The invisibility cloak, one of the three sacred…
Electronic games are the most common form of entertainment today. People can access thousands of games with different contents just through a computer or a…
The cold climate and remote location, as well as the cost of solving these two problems, seem to hinder the large-scale development of temperate industrial…
