Menu English Ukrainian russian Home

Free technical library for hobbyists and professionals Free technical library

Free library / Directory / Spectacular tricks and their clues

Fire paints a picture. Focus Secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

Comments on the article Comments on the article

Focus Description:

An ordinary newspaper is attached to a fireproof stand. If it is carefully set on fire, it will burn, but not all. The stand will be left with a clear newspaper appliqué of your chosen design (such as a moon or a flower).

Focus secret:

How to achieve this? Requires advance preparation. Make a stencil of an object whose silhouette is pronounced. Apply the stencil to the newspaper and thoroughly soak the entire volume with a solution of natural alum. They will give the newspaper fire resistance. Pin the newspaper to the stand. The solution is not visible after drying. Push the button into the upper part of the silhouette. Bring a burning match from below - the newspaper will burn, and the impregnated silhouette will remain intact.

If you add potassium nitrate to the alum solution and turn off the light, your application will sparkle in the dark.

Author: V.Postolaty

 We recommend interesting articles Section Spectacular tricks and their clues:

▪ Confused woman

▪ Animal map

▪ White egg tower

See other articles Section Spectacular tricks and their clues.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

The speech of sperm whales is similar to that of humans 18.05.2024

In the world of the ocean, where the mysterious and unknown coexists with the studied, sperm whales, with their huge brains, are of particular interest to science. Researchers, working with a huge array of audio recordings collected during the Dominica Sperm Whale Project (DSWP) - more than 8000 recordings, seek to unravel the secrets of their communication and understand the structure and complexity of the language of these mysterious creatures. By studying in detail the recordings of 60 sperm whales in the eastern Caribbean, scientists have revealed surprising features of their communication, revealing the complexity of their language. "Our observations indicate that these whales have a highly developed combinatorial communication system, including rubato and ornaments, which indicates their ability to quickly adapt and vary during communication. Despite significant differences in evolution, sperm whales have elements in their communication that are characteristic of human communication," says Shane Gero, a biologist at Carleton University and director of the CETI project. Issl ... >>

Electron spin for quantum information transfer 18.05.2024

The transfer of quantum information remains one of the key tasks of modern science. Recent advances in the use of electron spin to expand the capabilities of information transfer in quantum systems have become very important. Researchers at Lawrence Berkeley National Laboratory are pushing the frontiers of quantum information science by experimenting with the possibilities of electron spin. Electron spin, a natural quantum bit, is a potentially powerful means for storing and transmitting information in quantum systems. Magnon wave packets, collective excitations of electron spin, have revealed their potential to transmit quantum information over significant distances. The work of Berkeley Lab researchers has revolutionized the way such excitations propagate in antiferromagnets, opening up new prospects for quantum technologies. Using pairs of laser pulses, scientists disrupted antiferromagnetic order in one place and simultaneously studied it in another, creating ... >>

Sound-absorbing silk 17.05.2024

In a world where noise is becoming increasingly intrusive, the emergence of innovative materials that can reduce its impact is of great interest. MIT researchers have unveiled a new sound-absorbing silk fabric that promises to revolutionize quiet spaces. The Massachusetts Institute of Technology (MIT) has made significant breakthroughs in the field of sound absorption. Researchers have developed a special silk fabric that can effectively absorb sound and create cozy, quiet environments. The fabric, thinner than a human hair, contains a unique vibrating fiber that is activated when voltage is applied to it. This feature allows the fabric to be used to suppress sound waves in two different ways. The first method uses fabric vibrations to generate sound waves that cover and cancel out unwanted noise, similar to noise-canceling headphones. This p ... >>

Random news from the Archive

Passport on iPad allowed to cross the American border 07.01.2012

Canadian citizen Martin Reisch crossed the US border, presenting at the checkpoint not a passport, as required by law, but a scanned version of it, stored on an Apple iPad tablet computer. For some reason, when he went on a trip, he left the document at home and went to America to deliver Christmas presents to the children of his friends.

Stopping at the border to check documents, Martin showed his driver's license to the border guards, and instead of a real passport, he tried his luck with his scan, because the trip home would have taken a long two hours. Luck was on the traveler's side. After considering the situation, the border guard gave the go-ahead to cross the border.

By the way, Reisch returned to Canada on the same day and again showed a scan of the passport on the iPad. And again he crossed the border without hindrance. It is possible that the border guards subsequently received disciplinary sanctions, but the main thing is that the children received their legitimate gifts. And the rest is details.

Other interesting news:

▪ Hypersonic wind tunnel JF-22

▪ Music intoxication

▪ Ear plugs in the nose for those who want to lose weight

▪ Creative T3150 Wireless 2.1 speaker system

▪ Gadget Panasonic MS-DS100 will get rid of the unpleasant smell of shoes

News feed of science and technology, new electronics


Interesting materials of the Free Technical Library:

▪ section of the site Car. Article selection

▪ article New Chronology. History and essence of scientific discovery

▪ article What particles can rise from the core of the Sun to its surface for a million years? Detailed answer

▪ article The functional composition of Sharp TVs. Directory

▪ article Attachment to the multimeter for measuring temperature. Encyclopedia of radio electronics and electrical engineering

▪ Article Magic trio. Focus Secret

Leave your comment on this article:


Email (optional):

A comment:

All languages ​​of this page

Home page | Library | Articles | Website map | Site Reviews