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Xenon flashes for mobile devices

05.03.2013

The development of Nanyang Technological University may change the perception of the photographic abilities of mobile devices.

The camera today is an indispensable element of equipping mobile devices, but the flash, if any, is low-power, LED. Meanwhile, it is known that the quality of photographs is largely determined by the presence of light, so a powerful flash would be useful when shooting in low light conditions.

Compact and SLR cameras, as well as external flashes, use xenon lamps that can generate powerful flashes with a color temperature close to that of sunlight. It is difficult to place such a lamp in a mobile device, but it is possible, however, to power it, a large capacitor is needed that can quickly release the accumulated charge. The size of such capacitors is an almost insurmountable obstacle to xenon flashes in modern, thin smartphones and tablets.

More precisely, they were, since recently specialists from the Nanyang Technological University in Singapore created a multilayer polymer capacitor with suitable parameters. At the same time, it is four times smaller in size than a modern electrolytic capacitor of the same capacity and has a very low equivalent internal resistance.

Xenon Technologies, the world's largest manufacturer of xenon flash lamps, has become interested in commercializing the development. The parties have already entered into an appropriate agreement. They hope to have a commercial prototype by September of this year.

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Voting in the animal world 18.08.2003

Since the thirties of the last century, when dominant and subordinate individuals were discovered among animals, the idea of \uXNUMXb\uXNUMXbstrict hierarchy and even dictatorship in animal communities has been established.

However, new data suggests that there is democracy in the animal world. This system is better than submission to the sole decision of the leader, if only because the members of the community are more willing to implement the joint decision of the majority.

Animal behaviorists from the University of Sussex (UK) found that their wards even use voting. Opinion on controversial issues is expressed in different ways. Gorillas grunt, chimpanzees squeal. When a flock of swans is about to take to the air, the birds begin to stretch their necks and nod their heads. As soon as the frequency of such movements in most birds reaches 26 per minute, the flock rises to the wing.

A herd of red deer lying on the grass moves to another place when 62 percent of the adults get to their feet. Suffrage is not granted to everyone; in most species, only adults vote. In baboons, everything is decided by a small group of males - the "political elite".

In African elephants, by contrast, it is the females who make the important decisions. It is the same with buffaloes, with the females controlling the strong half of the herd with their views. The herd goes in the direction where most females are looking. The votes are not counted.

Animals instinctively see which side the majority is on. As a rule, a simple majority is enough to approve the results of the vote, but for gorillas, a two-thirds majority decides.

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