Four pieces of rope at a time. Effective trick and its solution

EFFECTIVE FOCUSES AND THEIR CLUES
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Four pieces of rope at a time. Focus secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

Focus Description:

Take a piece of thread, scissors, and have your little viewers cut the thread into four pieces at a time. When all their attempts fail, show them how to do it.

Focus Four pieces of rope at a time

Focus secret:

Fold the thread in three. Then cut all three parts in the center. So there are four separate pieces.

Author: V.Postolaty

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Computer displays instead of glasses and contact lenses 29.07.2014

Specialists from the University of California at Berkeley (USA), the Massachusetts Institute of Technology (USA) and Microsoft Corporation are developing a new type of computer display that will allow people with various visual impairments to clearly see images without glasses or contact lenses.

The essence of the technology is as follows. Based on information about the degree of deviation of the user's vision from the norm, software algorithms correct the image in real time in a special way. On top of the screen is a special acrylic light filter with tiny holes corresponding to the array of pixels. As a result, the rays passing through the filter reach the user's eyes in such a way that he perceives a clear picture - as if looking at the display through glasses.

Researchers have already developed a prototype of the new system, but it is not yet ready for the commercial market. The thing is, there are a number of issues that need to be addressed. So, for now, the image can be clearly seen only from a certain distance. It is planned to circumvent this shortcoming by using a complex for tracking the position of the head and eyes of a person looking at the screen.

In addition, in its current form, the system allows only one user to view a clear image - for other people looking at the screen, the picture looks blurry. It may be possible to solve this problem through the use of high-resolution panels and advanced image processing algorithms.

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