Areas with no source of electricity remain in darkness until the comes up, because street lights need a power supply. British firms offer new appliances, such as solar-powered street lights. They work by using energy accumulated during the day from a solar panel. The batteries are being charged during the day and then it's power is used for lighting. The system can be used for one individual light or a number of them. In the south of Saudi Arabia a motorway tunnel miles from any power supply is lit day and night by solar-powered devices. The advantages of sun-powered lamps are that they can bring light to areas distant from any other power supply and that they do not pollute the environment.
The current time differs from the previous one: here is ruled by technology and product is information. no wonder they say that the 21st century is the century of information technology. what only recently seemed new and unknown, it is now irrelevant. we conquer space not in the near-earth space, and sent their research mini-station on mars, is the exploration of saturn, jupiter, and titan. once this can only be read in science fiction books. for example, the ideas of the novels of jules verne, such as a submarine, became a reality in the 20th century. the time has come to realize the most daring fantasies of modernity. man explores the ocean floor with the help of sophisticated equipment and online mode it can be observed by millions of internet users. the global wide web has become a comprehensive space, which united all and all.
comes up, because street lights need a power supply. British firms offer new appliances, such as solar-powered street lights. They work by using energy accumulated during the day from a solar panel. The batteries are being charged during the day and then it's power is used for lighting. The system can be used for one individual light or a number of them. In the south of Saudi Arabia a motorway tunnel miles from any power supply is lit day and night by solar-powered devices. The advantages of sun-powered lamps are
that they can bring light to areas distant from any other power supply and that they do not pollute the environment.