Clock synchronization

Clock synchronization is a difficulty from computer science and engineering which deals with the idea that internal clocks of several computers may be different. Even when initially set accurately, real clocks will differ following some amount of time due to clock drift, caused by clocks counting time at slightly different rates. There are several problems that take place as a consequence of rate differences and several solutions, some being more appropriate than others in certain contexts.

China Wall

The Great Wall is the world's longest human-made arrangement, stretching over about 6,400 km (4,000 miles) from Shanhai Pass in the east to Lop Nur in the west, along an arc that roughly delineates the southern edge of Inner Mongolia. It is also the biggest human-made structure ever built in terms of surface area and mass. A number of walls, referred to as the Great Wall of China, were built since the 5th century BC, the most famous being the one built between 220 BC and 200 BC by the first Emperor of China, Qin Shi Huang. That wall was much farther north than the current wall, built through the Ming Dynasty, and little of it remains.

Exploration

Exploration is the act of searching or traveling for the reason of discovery, e.g. of unknown regions, together with space, for oil, gas, coal, ores, caves, water (Mineral exploration or prospecting), or information.The term can also be used to depict the first incursions of peoples from one culture into the geographical and cultural environment of others. Although exploration has existed as long as human beings, its reach your peak is seen as being during the age of discovery when European navigators travelled around the world discovering new worlds and cultures.