Menu English Ukrainian russian Home

Free technical library for hobbyists and professionals Free technical library


EFFECTIVE FOCUSES AND THEIR CLUES
Free library / Directory / Spectacular tricks and their clues

Disappearing photo. Focus Secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

Comments on the article Comments on the article

Focus Description:

The photo disappears.

Focus secret:

For this trick you need to prepare a strip of thick paper. The dotted line in this figure indicates the fold lines, and the solid lines indicate the cut lines. A photograph should be pasted onto one of the paper tabs and should disappear.

Focus Disappearing Photo

Before starting the trick, you need to fold the strip, placing one tab behind the other: in this case, the viewer will see the photo in the cut-out window. When demonstrating, you should quickly move the bases of the figure in different directions, causing the tongues to come out of mutual engagement, and then immediately bring the bases together in the opposite direction. The tabs will return to their normal position, and instead of the photograph, the viewer will see white paper.

 We recommend interesting articles Section Spectacular tricks and their clues:

▪ Plate - grinding wheel

▪ Foresight session (several tricks)

▪ The disappearance of a dove from a glass box

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:

Air trap for insects 01.05.2024

Agriculture is one of the key sectors of the economy, and pest control is an integral part of this process. A team of scientists from the Indian Council of Agricultural Research-Central Potato Research Institute (ICAR-CPRI), Shimla, has come up with an innovative solution to this problem - a wind-powered insect air trap. This device addresses the shortcomings of traditional pest control methods by providing real-time insect population data. The trap is powered entirely by wind energy, making it an environmentally friendly solution that requires no power. Its unique design allows monitoring of both harmful and beneficial insects, providing a complete overview of the population in any agricultural area. “By assessing target pests at the right time, we can take necessary measures to control both pests and diseases,” says Kapil ... >>

The threat of space debris to the Earth's magnetic field 01.05.2024

More and more often we hear about an increase in the amount of space debris surrounding our planet. However, it is not only active satellites and spacecraft that contribute to this problem, but also debris from old missions. The growing number of satellites launched by companies like SpaceX creates not only opportunities for the development of the Internet, but also serious threats to space security. Experts are now turning their attention to the potential implications for the Earth's magnetic field. Dr. Jonathan McDowell of the Harvard-Smithsonian Center for Astrophysics emphasizes that companies are rapidly deploying satellite constellations, and the number of satellites could grow to 100 in the next decade. The rapid development of these cosmic armadas of satellites can lead to contamination of the Earth's plasma environment with dangerous debris and a threat to the stability of the magnetosphere. Metal debris from used rockets can disrupt the ionosphere and magnetosphere. Both of these systems play a key role in protecting the atmosphere and maintaining ... >>

Solidification of bulk substances 30.04.2024

There are quite a few mysteries in the world of science, and one of them is the strange behavior of bulk materials. They may behave like a solid but suddenly turn into a flowing liquid. This phenomenon has attracted the attention of many researchers, and we may finally be getting closer to solving this mystery. Imagine sand in an hourglass. It usually flows freely, but in some cases its particles begin to get stuck, turning from a liquid to a solid. This transition has important implications for many areas, from drug production to construction. Researchers from the USA have attempted to describe this phenomenon and come closer to understanding it. In the study, the scientists conducted simulations in the laboratory using data from bags of polystyrene beads. They found that the vibrations within these sets had specific frequencies, meaning that only certain types of vibrations could travel through the material. Received ... >>

Random news from the Archive

Device to quickly stop bleeding 18.12.2015

Prompt cessation of bleeding in a gunshot wound is the most important factor in survival. According to the US Department of Defense Institute for Surgical Research, 30-40% of people with gunshot wounds die as a result of blood loss and 33-56% of them die before arriving at the hospital.

The XSTAT Rapid Hemostasis System technology, patented by the American company RevMedX, is used to stop bleeding within 15 seconds and is indispensable in areas of the body where it is physically impossible to apply a conventional tourniquet.

XSTAT 30 is a large syringe applicator with a diameter of 30 millimeters containing 92 compressed cellulose sponges in the form of a tablet coated with a special absorbent layer.

When injected into a wound, the sponges swell and fill the wound cavity, thereby creating a physical barrier to blood flow. The number of jaws used can vary depending on the diameter and depth of the bullet hole.

The XSTAT 30 applicator is able to absorb about 0,6 liters of blood and stop bleeding for up to 4 hours. To facilitate extraction of the sponges from the wound, each of them contains an X-shaped radiological marker that will be clearly visible on the x-ray.

The unusual device was approved by the FDA in April last year for use by the Pentagon during the fighting, now the new technology is available to civilians.

Other interesting news:

▪ NAND flash is getting cheaper

▪ Experiments on chimpanzees are prohibited

▪ A new way to discover coral reefs

▪ Truck wash basin

▪ Tsunami on Mars

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ section of the site Metal detectors. Article selection

▪ article Phedre. Famous aphorisms

▪ article Why are not all clouds rain? Detailed answer

▪ article Shchetinnik. Legends, cultivation, methods of application

▪ article Modification of Alinco DJ-191. Encyclopedia of radio electronics and electrical engineering

▪ article Automatic charger for nickel-cadmium batteries. Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:

Name:


Email (optional):


A comment:





All languages ​​of this page

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

www.diagram.com.ua

www.diagram.com.ua
2000-2024