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Back in 2005, a group of computer scientists carried out a now-famous study of the way visits to a website fall over time. These guys looked at the traffic to a Hungarian news site and found that it decayed as a power law.
This, they said, has a straightforward explanation: the amount of traffic is simply a reflection of people's browsing habits.
Th
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There's growing evidence that if you are part of a social network, the structure of the network itself can reveal important information about you, regardless of what you have published yourself.
For example, in December we looked at a study of a computer gaming network, which showed that if you have friends who cheat at computer games, you are
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One of the most powerful ideas in modern physics is that the Universe is governed by symmetry. This is the idea that certain properties of a system do not change when it undergoes a transformation of some kind.
For example, if a system behaves the same way regardless of its orientation or movement in space, it must obey the law of conservation of
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Back in 1954, the Japanese physicist Ukichiro Nakaya published a landmark study on the nature of snowflakes. He classified flakes into various categories and even discovered how to grow them in laboratory conditions, the first time this had been done.
Nakaya discovered snow flakes form when supersaturated vapour cools below zero but also that their
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