Knot in a case. Effective trick and its solution

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EFFECTIVE FOCUSES AND THEIR CLUES
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Knot in a case. Focus secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

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Focus Description:

The knot disappears from the case.

Focus secret:

Focus Knot in a case

Tie a knot around the match case. Pass the left end of the lace through the case.

Remove the resulting "knot" from the case and hide it inside. Then stretch the cord to the sides - and the knot in the case will disappear.

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Airplanes and hypertension 13.08.2008

A study of 140 people living near four major European airports found that the noise from night planes raises their blood pressure, even if people are used to the roar of turbines and do not wake up from it.

On average, the noise from an overflying aircraft increases systolic pressure by 6,2 millimeters of mercury, and diastolic by 7,4 millimeters. Every 10 decibels increase in nighttime noise increases the risk of developing hypertension by 14%.

Doctors recommend a ban on night flights. In turn, engineers are advised to strengthen the soundproofing of windows near houses and plan turn zones for landing approaches and heading away from residential areas.

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