Burning pencil. Effective trick and its solution

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EFFECTIVE FOCUSES AND THEIR CLUES
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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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Random news from the Archive

Cat recognition system 26.02.2018

A Dutch programmer has put a homemade device on the front door that sends a notification to a smartphone whenever a cat approaches the house.

Dutch front-end developer Arakis Garro lives with his wife and cat Bobis. Actually, the cat is not his, but a neighbor's, but since Garro moved into his current home, Bobis has become a frequent visitor. The cat likes to come into the house, and does it at about the same time, so Garro and his wife sometimes open the front door in advance. But they wanted to know for sure that the cat came to visit, so as not to inadvertently miss the visit, so Garro created a cat recognition system.

The device consists of a small video camera, a motion sensor, and a Raspberry Pi computer. When someone passes by the door, the sensor turns on the camera, and the algorithm analyzes the footage taken by it and, if a cat sits in front of the door, sends a notification to the smartphone of the owners of the house.

Garro used the free cloud-based pattern recognition algorithm Rekognition. The entire system cost Garro $50 and a few hours of time. Cat recognition accuracy, according to Garro, approaches 100%.

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