How fast is the speed of light in a vacuum? Detailed answer

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How fast is the speed of light in a vacuum? Detailed answer

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How fast is the speed of light in a vacuum?

The propagation speed of electromagnetic waves (including light waves) in free space (vacuum) is one of the fundamental physical constants. Its huge role in modern physics is determined by the fact that the speed of light is the limiting speed of propagation of any physical influences and does not change when moving from one frame of reference to another. No signals can be transmitted faster than the speed of light.

The magnitude of the speed of light relates the mass and total energy of a material body; through it the transformations of coordinates, velocities and time are expressed when the reference system changes; it enters into many other ratios.

According to modern data, the speed of light in a vacuum is 299 meters per second.

Author: Kondrashov A.P.

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Peter I struggled with drunkenness by various methods. For particularly distinguished alcoholics, he ordered to make a cast-iron order "For drunkenness" weighing about 7 kg, excluding the chain. It was hung around the neck of drunkards in the police station and fastened with chains so that it could not be removed, forcing them to walk in this form for a week.

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4K Video Transfer Adapter USB 3.0 21.07.2014

Modern video cards and 4K monitors are equipped with several HDMI and DVI interfaces by default, but sometimes working moments require the simultaneous connection of three or four displays. The number of corresponding ports on the computer limits such manipulations. In this case, the available connectors, even if the UHD display model has the ability to connect via DisplayPort, may simply not be enough.

In this case, a solution from Club 3D comes to the aid of the user. The demonstrated adapter for connecting a monitor to a computer and then broadcasting 4K video bypasses the usual connectors on a graphics accelerator. On the one hand, the manufacturer equipped the "adapter box" with a DisplayPort connector, and on the other hand, the connection to a PC or laptop will be implemented via USB version 3.0.

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Previously, Club 3D engineers had already been developing a similar adapter, but at that time the interface available for use was a USB 2.0 port. This standard simply did not allow video transmission with a resolution of 3840? 2160 pixels.

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