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Call across the stratosphere

19.09.2002

The American firm Space Data Corporation offered the National Weather Service a mutually beneficial cooperation.

Every day, meteorologists launch 30 balloons with meteorological instruments into the stratosphere, to a height of up to 140 kilometers. If scientists allow cellular communication equipment to be attached to their probes, the company will provide them with an accurate minute-by-minute determination of the coordinates of each ball using a satellite navigation system, which will significantly increase the reliability of forecasts. And residents of sparsely populated and hard-to-reach areas, especially mountainous areas where radio waves are blocked by mountains and gorges, will receive reliable mobile communications. One balloon will serve an area of 100 square miles (one tower with a base station - 000-100 square miles).

The company undertakes to supply about 300 balloons with its equipment (the kit will cost about $51) annually, since most often the load of the cylinder is irretrievably lost after the probe bursts in the upper atmosphere. Moreover, the entire payload, including meteorological instruments with a telemetry transmitter, should not exceed 2,7 kilograms, which is considered safe in the event of a ball collision with an aircraft.

If the project is approved by the meteorological service, the first experiments will begin this year.

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On the trail of chocolate 19.08.2007

Curious studies of the sense of smell in humans were conducted by Jess Porter, a graduate student at the University of Berkeley (USA).

She asked 32 undergraduate students to follow a 10-meter zigzag path with a chocolate-scented liquid on the grass of a lawn using their sense of smell. To ensure that the experimental subjects were not distracted by anything, they were blindfolded and their ears were plugged, leaving only the sense of smell. It turned out that two-thirds of the students, moving their noses from side to side, are able to complete the route in XNUMX minutes. After choosing four test subjects, they began to train them on the same exercise three times a day.

It turned out that the results are significantly improved with training. The possibility of "stereoscopic" sense of smell in humans (it is known in rats) was studied on 14 volunteers. With one nostril plugged, only a third made it to the end of the trail, and they did it 26% slower than with two nostrils.

The general conclusion: of course, the human sense of smell lags behind the canine, but it is much better than it is commonly thought, and lends itself to development.

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