Disappearing pencil. Effective trick and its solution

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Disappearing pencil. Focus secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

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Focus Description:

The handkerchief transforms the pencil into your index finger.

Focus secret:

Show a medium length pencil to the audience. Cover it with a handkerchief. As soon as the pencil is out of sight under the handkerchief, quickly extend your index finger under the handkerchief, imitating a pencil, and lower, drop the pencil into the sleeve, simply loosening the rest of the fingers, and it will slip into the sleeve itself.

Focus Disappearing Pencil

Now take the handkerchief by the corner with your other hand. Everyone will have the feeling that you are still holding a pencil under your handkerchief.

Throw the handkerchief in the air so that everyone can see it, and the pencil will disappear.

If this trick is done quickly, easily, precisely and elegantly, everyone will be completely delighted.

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Random news from the Archive

A new way to pasteurize milk 20.11.2013

Researchers from the University of Hohenheim and the Fraunhofer Institute for Engineering and Biotechnology (Germany) have developed a new method for pasteurizing milk using microwaves as part of the MicroMilk project. This method preserves the valuable components of milk and is also suitable for heating viscous and concentrated dairy products. In the near future, scientists will share the technology of processing milk and dairy products with food producers.

To increase the shelf life of fresh milk and prevent the growth of microorganisms, milk is usually heated - that is, a pasteurization process is carried out, during which cold milk is heated in several stages. So, at one of the stages, the temperature of milk rises in a few seconds to 72 degrees Celsius. The main microorganisms present in milk are killed during this process, which means that milk can be stored for 10 days.

Currently, milk is pasteurized using heat exchangers in which preheated milk moves towards hot water or steam. The heat generated during the pasteurization of the previous volume of milk is used to heat the incoming portion of cold milk. But, scientists note, this method of heating has disadvantages. Thus, the heat exchange process is weakened due to the formation of contaminants on the surface of the heat exchanger. Therefore, the equipment must be cleaned regularly - a waste of time and water. But with the new method of pasteurization, too much energy, water and detergents are not needed.

As part of the MicroMilk project, scientists have developed a system that allows you to "secure" milk and dairy products using microwaves. A prototype continuous microwave pasteurizer with a throughput of 400 liters of milk per hour was integrated into an existing pasteurization process at the Hohenheim University dairy. Even during trial operation, the advantages of the new system were obvious. Since the device no longer had to be constantly cleaned, it was possible to save time and large volumes of water. In addition, the process of heating milk to the desired temperature takes place almost 3 times faster. Milk is exposed to high temperatures only for a short time, so most of the valuable and heat-sensitive substances, especially proteins and vitamins, are preserved.

Microwave pasteurization equipment is a compact reactor, which is divided into several compartments. Each compartment is equipped with its own magnetron, which generates electromagnetic waves. The microwave devices are connected in a waveguide which simultaneously acts as a heating chamber. Milk flows through this cavity through special pipes. The pipe material does not absorb microwaves and is resistant to heat and pressure.

During this passage through the pipes, the milk is heated and, in contrast to the process with a heat exchanger, is heated in a different way. When electromagnetic waves are absorbed by the milk molecules, it causes the molecules to oscillate and heat the entire volume of milk at the same time.

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