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Burning pencil. Focus Secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

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Focus Description:

The magician lights a pencil.

Focus secret:

You must sharpen the pencil to such an extent that the lead should break off. Then cut the match so that only the head of the match sticks out of the pencil, and insert it in place of the stylus. And then just strike a box of matches with a pencil - and it will light up!

To make the focus look more effective, you can take a brown pencil.

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Gilded Bow Muscles 14.05.2015

Scientists from the National Taiwan University have managed to create artificial muscles from the epidermis of onions.

Existing synthetic polymer-based muscles can contract and flex but, unlike real ones, cannot do both at the same time. During the experiments, the researchers found that the transparent thin film of the skin of the onion shrinks under the influence of electricity and has excellent flexibility.

To make artificial muscles out of it, moisture was removed from the onion skin using freeze-drying, and to remove hemicellulose from the fabric and restore lost flexibility, the sample was treated with sulfuric acid. Then the epidermis was coated on both sides with a layer of gold and cut into thin strips.

Depending on the tension, the muscle bands are able to contract, and the onion test tweezers were able to lift a 0,1 milligram cotton ball. Scientists will continue experiments in practice and hope that the "onion" technology will find its application.

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