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

Stubborn candle. Focus Secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

Comments on the article Comments on the article

Focus Description:

Put four white cylinders of the same height on top of each other. A "candle" was formed. Light it from above (Fig. 1). After that, starting from the top, knock out the cylinders to the side - one at a time. When the top one flies off, the candle will continue to burn, but on the cylinder below. The next falls, and the candle continues to burn.

Focus Stubborn Candle

Focus secret:

What's the secret? All wooden cylinders have a narrow vertical slot on one side. It reaches exactly to the center (Fig. 2). When the cylinders are folded, the slot should be on the same straight line, on the opposite side from the audience. A "secret" wick is inserted in the center of the upper cylinder. It is made of thin wire and is slightly longer than one cylinder in size.

The top of the wick has a small round plate that prevents the wick from falling down (Fig. 3). A piece of cotton wool soaked in kerosene is wound on the tip of the wick. When the upper cylinder pops up after a finger strike to the side, the wick, dropping lower, will occupy the next cylinder. And the "candle" will continue to burn.

Author: V.Postolaty

 We recommend interesting articles Section Spectacular tricks and their clues:

▪ Finger strength

▪ And the rope is whole!

▪ Magic wand-fountain

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:

Improving the efficiency of PbS quantum dot solar cells 14.06.2024

The latest solar technology research represents a significant breakthrough in improving the efficiency of PbS quantum dot solar cells. This method, based on the use of pulsed light, offers promise for simplifying the production and expanding the applications of these cells. A research team from the Daegu Gyeongbuk Institute of Science and Technology has developed an innovative method that uses pulsed light to improve the electrical conductivity of PbS solar cells. This method can significantly reduce the processing time required to achieve similar results. PbS quantum dot solar cells have significant potential in solar technology due to their photovoltaic properties. However, the formation of defects on their surface can reduce their performance. The new method helps suppress defect formation and improve electrical conductivity. Using strong light to complete the process ... >>

Magnetic Power Bank 5000mAh 14.06.2024

Huawei introduces a convenient and multifunctional charger to the market - Huawei SuperCharge All-in-One Magnetic Power Bank. This magnetic battery allows you to quickly and conveniently charge your Huawei phone anywhere, anytime. With a thickness of just 11,26 mm and a weight of 141 grams, this portable power bank fits easily into a pocket or bag, making it ideal for travel and everyday use. Despite its compact size, this battery provides enough power to charge your phone on the go. The new product supports wired charging with a power of 25 W and wireless charging up to 15 W (and up to 30 W when connected to an adapter), providing fast charging for both the power bank itself and other devices. The battery is compatible with various fast charging protocols such as SCP, UFCS and PD, making it ideal for a wide range of devices. The power bank is also compatible with Huawei phones that support wireless charging. ... >>

Changes in a father's brain after the birth of a child 13.06.2024

A recent study conducted by scientists from the Hefei Institute of Physical Sciences of the Chinese Academy of Sciences found interesting changes in the brains of men after becoming fathers. These changes were associated with involvement in child care, sleep problems, and mental health symptoms. Scientists found that men who became fathers experienced a loss of brain volume after giving birth. This volume loss was associated with greater involvement in parenting, sleep problems, and mental health symptoms. Researchers have found significant changes in men's brains between the prenatal and postnatal periods. In particular, there was a loss of gray matter volume, especially in parts of the brain responsible for higher functions such as language, memory, problem solving and decision making. Men who paid more attention to their children and spent more time with them lost more gray matter in their brains. This also affected their mental health ... >>

Random news from the Archive

The existence of a time loop has been proven 28.08.2018

Scientists at the University of Queensland in Australia have demonstrated that, in terms of quantum mechanics, two different events can precede each other at the same time. Violation of the causal relationship was demonstrated using the polarization of photons in the interferometer.

In the course of the study, physicists passed photons through an interferometer - a device with which a beam of electromagnetic radiation is divided into several beams going through different optical paths (A and B). Eventually, the two beams recombine and overlap each other, resulting in interference. The setup was assembled in such a way that, with vertical polarization, the photon will choose the left path, then return back and hit the right side of the interferometer. With horizontal polarization, the particle first goes along the right path, and then along the left.

However, with diagonal polarization, the quantum wave describing the position of the photon "splits", moving along both paths simultaneously. The vertically and horizontally polarized components first go each along their own path, return back, and switch to an adjacent path. Thus, both components go along each path at once, that is, the photon seems to go along both paths at the same time. At the end of each path, the photon splits again, with one component coming back and the other leaving the setup.

In this case, it is very difficult to determine which event precedes the other: either the return of the polarized components to the beginning of the paths creates the appearance of the photon passing along A and B simultaneously (the photon passes first along one path, and then along the other), or the splitting of the "forked" photon into the end of each of the paths causes a one-time return of the components to the beginning of each path (and then the photon actually passes along both paths simultaneously).

To solve this problem, scientists conducted a series of experiments, each time inserting additional lenses into the installation, which change the spatial distribution of the light beam. This allows you to change the polarization of the photon at the moment when the quantum waves are again superimposed on each other. If each photon in the beam first traveled one path and then another, then the resulting polarization of the photon must correspond to a certain value. However, the researchers found that it was impossible to determine in the experiment which of the events actually causes the other. In other words, both processes are cause and effect of each other.

Other interesting news:

▪ Candies that restore tooth enamel

▪ Google introduced its own tablet

▪ Netbook UbiSurfer

▪ Interactive whiteboards in Moscow schools

▪ Islamic phone

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ section of the site Civil radio communications. Article selection

▪ article Can't see the forest for the trees. Popular expression

▪ article What is UEFA? Detailed answer

▪ article Mednik. Standard instruction on labor protection

▪ article Two-channel thermometer-thermostat, 5-95 degrees. Encyclopedia of radio electronics and electrical engineering

▪ article Proportional voltage regulator. 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