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10 godz. temu · In the first century AD, Ptolemy estimated the distance as 1,210 times the radius of Earth, approximately 7.71 million kilometers (0.0515 AU). [168] The theory that the Sun is the center around which the planets orbit was first proposed by the ancient Greek Aristarchus of Samos in the third century BC, [169] and later adopted by Seleucus of ...
10 godz. temu · The distance the light from the edge of the observable universe has traveled is very close to the age of the universe times the speed of light, 13.8 billion light-years (4.2 × 10 ^ 9 pc), but this does not represent the distance at any given time because the edge of the observable universe and the Earth have since moved further apart.
10 godz. temu · The Moon is Earth's only natural satellite.It orbits at an average distance of 384,400 km (238,900 mi), about 30 times the diameter of Earth. Tidal forces between Earth and the Moon have over time synchronized the Moon's orbital period (lunar month) with its rotation period at 29.5 Earth days, causing the same side of the Moon to always face Earth. . The Moon's gravitational pull – and to a ...
10 godz. temu · Evil Twin, or ET for short, is an attack that involves creating a fake WLAN impersonating an already existing network in order to intercept traffic [1,2,3,4,5,6,7,8].Disconnecting a user from a real AP will in most cases trigger an attempt to reconnect to the network, at which point the ET will respond to the resulting opportunity by taking over the connection, providing an advantage in this ...
10 godz. temu · A dive computer, personal decompression computer or decompression meter is a device used by an underwater diver to measure the elapsed time and depth during a dive and use this data to calculate and display an ascent profile which, according to the programmed decompression algorithm, will give a low risk of decompression sickness. A secondary function is to record the dive profile, warn the ...
10 godz. temu · In telecommunications, packet switching is a method of grouping data into packets that are transmitted over a digital network.Packets are made of a header and a payload.Data in the header is used by networking hardware to direct the packet to its destination, where the payload is extracted and used by an operating system, application software, or higher layer protocols.
10 godz. temu · Authored by Jeffrey Sachs via AntiWar.com, For the fifth time since 2008, Russia has proposed to negotiate with the U.S. over security arrangements, this time in proposals made by President Vladimir Putin on June 14, 2024. Four previous times, the U.S. rejected the offer of negotiations in favor of a neocon strategy to weaken or dismember Russia through war and covert operations.
