Swing knot. Travel Tips

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Swing knot. Travel Tips

Tourist tips

When arranging a swing on your own, the choice of a cable and a knot with which this cable will be attached to the crossbar is of great importance. The reliability of your homemade structure mainly depends on this.

Best to use swing knot.

Rice. 61. Swing knot

If you decide to make a swing in the country or in the courtyard of your house, do not look for another knot.

Author: Skryagin L.N.

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Electron microscopy - for children 19.08.2005

American scientists and teachers have created a program that will allow children to work with what looks like a real electron microscope.

“Today, children handle all sorts of technological innovations as freely as their parents - with books; they live in a technical world,” says Lynn Landis, a high school teacher in Pittsburgh (USA). “When the electronic world became part of my lessons, I felt that the school came closer to real life."

And the fact is that a group of scientists and teachers, with the support of the National Science Foundation, has collected a large collection of images from a scanning electron microscope and created software that allows you to study these images as if they were seen in a real microscope.

The scientists wanted to create a new generation virtual laboratory that would enable teachers to work with modern analytical instruments, and they were quite successful in this. With the help of an electronic laboratory called iSEM, students of the most ordinary school can perform experiments that have not been possible until now, from measuring the length of spider leg segments to studying the chemical composition of minerals in meteorites. Usually for such work you need a device worth two hundred thousand dollars, but now a computer and a CD are enough.

"Even students from low-income schools, thanks to iSEM, will master the skills of working with delicate devices that are needed in modern production, for example, in electronics, medicine or nanotechnology," says Sally Nerlove, project curator from the foundation. By the way, this development cost almost half a million dollars in two years.

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