A spinning egg. Effective trick and its solution

EFFECTIVE FOCUSES AND THEIR CLUES
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A spinning egg. Focus secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

Focus Description:

Bring some eggs in a bowl. Ask the audience if they can make the egg spin like a top. They will try to do it, but no one but you can do it.

Focus secret:

Why? Because among the eggs in the bowl there is one hard-boiled. This is the egg you take. Raw eggs will not spin. And yours will.

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Random news from the Archive

The rain will have to be filtered 24.08.2007

Since 2008, the US Environmental Protection Agency will prohibit all settlements with a population of more than 10 people from discharging rainwater from streets and roads into natural reservoirs without treatment: this water is polluted with oil products from numerous cars.

In the meantime, a small firm, AbTech Industries, has begun producing rainwater filters that are built into street grates. The filter consists of a polymer sponge that traps dirt. In addition, the sponge is impregnated with an antimicrobial agent that kills about 75% of pathogenic microbes that are present in street drains, get to river, lake and sea beaches and infect bathers. Depending on the location, the filter will have to be replaced once every one to three years.

Another solution comes from Australian inventor Simon Beecham. The streets, in his opinion, should be paved with slabs of porous concrete, to which iron hydroxide and activated carbon are added. The first component captures heavy metals from rainwater, the second - organic pollution. After such cleaning, rainwater seeps through the pores into the ground, replenishing the aquifers.

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