Quantum speed limits are not actually quantum

Quantum mechanics has fundamental speed limits—upper bounds on the rate at which quantum systems can evolve. However, two groups working independently have published papers showing for the first time that quantum speed ...

Quantum effects lead to more powerful battery charging

(Phys.org)—Physicists have theoretically shown that, when multiple nanoscale batteries are coupled together, they can be charged faster than if each battery was charged individually. The improvement arises from collective ...

Energy researchers break the catalytic speed limit

A team of researchers from the University of Minnesota and University of Massachusetts Amherst has discovered new technology that can speed up chemical reactions 10,000 times faster than the current reaction rate limit. These ...

How smart technology gadgets can avoid speed limits

Speed limits apply not only to traffic. There are limitations on the control of light as well, in optical switches for internet traffic, for example. Physicists at Chalmers University of Technology now understand why it is ...

Google merges online and offline worlds in Maps

Google on Wednesday took another step in its quest to merge the Internet with the real world with Maps and put itself at the heart of mobile gadget lifestyles in the process.

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Speed limit

A road speed limit is the maximum speed allowed by law for road vehicles. Speed limits are commonly set and enforced by the legislative bodies of nations or provincial governments, such as countries within the world.

The first maximum speed limit was the 10 miles per hour (16 km/h) limit introduced in the United Kingdom in 1861.

The Isle of Man is the only place in the world that does not have a general speed limit. In Germany, over 50% of the autobahn system remains free from speed limits.

Currently, the highest posted speed limit in the world is 140 kilometres per hour (87 mph) on Polish motorways , although a variable speed limit up to 160 kilometres per hour (99 mph) was permitted experimentally on a stretch of Austrian motorway in June 2006.

This text uses material from Wikipedia, licensed under CC BY-SA