Stubborn star. Fun physical experience at home

ENTERTAINING EXPERIENCES AT HOME
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Stubborn star. Physical experiments

Entertaining experiments in physics

Entertaining experiences at home / Physics experiments for children

From a fresh bread crumb, blind an asterisk with six rays-outgrowths. It should be the size of a walnut.

It would seem that such an asterisk is worth nothing to crush. But try to hit her on the floor. You can not be careful, throw what you have! The asterisk won't do anything anyway. Elastic processes spring and straighten up, so abruptly that they throw a stubborn star high up!

Stubborn asterisk

And no matter how many times you throw an asterisk, nothing will happen to it. She will bounce around like nothing happened. A stubborn asterisk is saved by elasticity!

There is only one prerequisite: an asterisk must be molded from completely fresh bread. Otherwise, it will break.

Author: Galpershtein L.Ya.

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Handheld x-ray scanners 17.01.2013

Engineers at the University of Missouri have developed a compact X-ray source that is about the size of chewing gum. This development will create hand-held X-ray machines needed by doctors and security services.

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The developers believe that in 3 years, based on the new technology, they will be able to create a compact X-ray machine, which is needed in many industries. A handheld X-ray scanner is useful for searching for defects in various designs, for examining luggage, on space technology, such as rovers. In medicine, portable x-ray machines are especially needed: imagine that dangerous radiation when taking a picture of a tooth will not be directed into the oral cavity, but vice versa - a “pill” emitter will be attached from the inside. It is possible that the power of the emitter can be increased hundreds of times, and then the military and special services will be interested in this invention, because the piezoelectric X-ray emitter will become a powerful secretive weapon that can kill a person.

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