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

The beads disappear and reappear. Focus Secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

Comments on the article Comments on the article

Focus Description:

Show the audience a small wooden box with a drawer. Pull out the box and hand it over to the audience for inspection. Remove the beads from the assistant's neck, put them in the box, then insert it into the box. And then pull it out again. Everyone will see that it is empty (Fig. a).

Focus Beads disappear and reappear
а

Approach the assistant, turn her over her left shoulder, and when she again faces the audience, the beads will be on her again.

Focus secret:

The assistant was wearing two pairs of beads. An elastic band is sewn to one string of beads, which allows you to pull them under the apron. From above, the elastic band is fixed under the collar of the dress. When the beads are pulled back, they are fastened to a button that is sewn onto the dress under the apron. Turning, the assistant imperceptibly frees the string of beads from the button. Bot so they reappear on the neck.

The secret of the disappearance of the first string of beads lies in the arrangement of the box and box (fig. b). The bottom of the box is glued with a strip of cloth to its front wall. At the back end of the bottom there is a metal latch plate, and at the bottom of the back wall of the box there is a small rim, behind which the latch goes. At the same level, a small hole was drilled in the back wall of the box, into which a hairpin carnation enters: it is attached at the same level to the back wall of the box (Fig. c).

Focus Beads disappear and reappear

When the box is pushed into the box, the nail enters the opening of the box and pushes the latch plate and the bottom falls down. The beads in the box are in the palm of your hand, since the box itself has no bottom. When the drawer is pulled out a second time, the bottom automatically rises into place and the latch again goes over the edge in the back of the drawer.

 We recommend interesting articles Section Spectacular tricks and their clues:

▪ magic leaf

▪ The checkerboard paradox

▪ Try to pierce

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:

Artificial leather for touch emulation 15.04.2024

In a modern technology world where distance is becoming increasingly commonplace, maintaining connection and a sense of closeness is important. Recent developments in artificial skin by German scientists from Saarland University represent a new era in virtual interactions. German researchers from Saarland University have developed ultra-thin films that can transmit the sensation of touch over a distance. This cutting-edge technology provides new opportunities for virtual communication, especially for those who find themselves far from their loved ones. The ultra-thin films developed by the researchers, just 50 micrometers thick, can be integrated into textiles and worn like a second skin. These films act as sensors that recognize tactile signals from mom or dad, and as actuators that transmit these movements to the baby. Parents' touch to the fabric activates sensors that react to pressure and deform the ultra-thin film. This ... >>

Petgugu Global cat litter 15.04.2024

Taking care of pets can often be a challenge, especially when it comes to keeping your home clean. A new interesting solution from the Petgugu Global startup has been presented, which will make life easier for cat owners and help them keep their home perfectly clean and tidy. Startup Petgugu Global has unveiled a unique cat toilet that can automatically flush feces, keeping your home clean and fresh. This innovative device is equipped with various smart sensors that monitor your pet's toilet activity and activate to automatically clean after use. The device connects to the sewer system and ensures efficient waste removal without the need for intervention from the owner. Additionally, the toilet has a large flushable storage capacity, making it ideal for multi-cat households. The Petgugu cat litter bowl is designed for use with water-soluble litters and offers a range of additional ... >>

The attractiveness of caring men 14.04.2024

The stereotype that women prefer "bad boys" has long been widespread. However, recent research conducted by British scientists from Monash University offers a new perspective on this issue. They looked at how women responded to men's emotional responsibility and willingness to help others. The study's findings could change our understanding of what makes men attractive to women. A study conducted by scientists from Monash University leads to new findings about men's attractiveness to women. In the experiment, women were shown photographs of men with brief stories about their behavior in various situations, including their reaction to an encounter with a homeless person. Some of the men ignored the homeless man, while others helped him, such as buying him food. A study found that men who showed empathy and kindness were more attractive to women compared to men who showed empathy and kindness. ... >>

Random news from the Archive

Digital magnetic field sensors from Texas Instruments 30.01.2015

Texas Instruments has released its first family of integrated Hall effect magnetic field sensors. Microcircuits DRV5013, DRV5023 and DRV5033 operate at a magnetic field of +3,2...+6 mT depending on the version of the microcircuit. From a practical point of view, this allows you to react to a neodymium magnet (the size of a CR2032 element) from a distance of 1...2 cm.

The inherent hysteresis of the sensor prevents repeated false alarms when the magnetic field changes slowly. When using sensors in battery-powered devices, you can only turn on the sensor for a short time of 38 µs, which is enough to make a measurement.

Indication of the presence of a magnetic field is carried out using a digital (logical) bipolar output with an open drain and a maximum load of up to 30 mA. The low current consumption of 2,7 mA allows the sensor to be powered directly from the I/O port of the microcontroller. The maximum bandwidth is 20 kHz.

DRV5013, DRV5023 and DRV5033 sensors differ in the type of response to the polarity of the magnetic field.

Hall sensors are available in SIP-3 (mod. TO-92) (LPG) and SOT-23-3 (DBZ) packages. Operating temperature range from -40°С to +125°С (suffix Q) and from -40°С to +150°С (suffix E).

Areas of application of integrated magnetic sensors: door open-close sensors, pulse counters, tachometers and encoders, object position detection, proximity sensors, pipeline valve position sensors, etc.

Other interesting news:

▪ Street heating

▪ Dirty air makes people stupid

▪ Food freshness indicator

▪ Fastest Wireless Charging

▪ Balloons with GLONASS

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ section of the site Security and safety. Article selection

▪ article Alteration of the washing machine for low water pressure. Tips for the home master

▪ article Who in Soviet times was awarded the prize for the invention of the time machine? Detailed answer

▪ article teacher. Job description

▪ article RF current meter. Encyclopedia of radio electronics and electrical engineering

▪ article Electrical installations of residential, public, administrative and domestic buildings. Introductory devices, switchboards, distribution points, group shields. 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