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

Moving picture. Focus Secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

Comments on the article Comments on the article

Focus Description:

In your hands - three frames connected to each other. A picture is placed in the middle of them, and the outer ones are both empty (Fig. a).

Focus Moving picture
а

Fold the frames together and move them apart again - the picture has moved from the middle frame to the far left. Once again, fold and push the frames - the picture is again in the middle frame. One more layout - and the picture is already in the right frame.

Focus secret.

All three frames - the same size and thickness - are made of lightweight material. If they are put together, then their windows will be strictly aligned with each other.

From the very beginning, a picture was inserted into the window of the middle frame, also made of a light, solid material and having exactly the same thickness as the frames themselves (Fig. b). It should not be very free to enter and exit the empty frame, but not very tight either.

Focus Moving picture

Each time, folding the frames together, imperceptibly and quickly squeeze the picture from one frame to another with your fingers (Fig. c), then push them apart and demonstrate the movement of the picture. To ensure that the picture always turns out to face the audience at the right time, just as quietly turn the folded frames to the opposite side.

 We recommend interesting articles Section Spectacular tricks and their clues:

▪ Pepperbox with disappearing coins

▪ broken pencil

▪ Broken wand

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

TV recognizes voice 24.01.2002

The Japanese company Panasonic announced the release of a high-definition TV with voice recognition functions - TH-36DH200. The new 36-inch TV has a built-in microphone, allowing the user to change channels, record and play video clips with the built-in DVR, find program information and more by commanding the TV with their voice.

The DVR has a built-in 80 GB hard drive that allows you to record up to 7 hours of high-definition video clips or up to 70 hours of conventional analog video.

Other interesting news:

▪ swirling light slows down

▪ Panoramic camera LG 360 CAM

▪ Boys to the left, girls to the right

▪ Computer memory helps human

▪ ROG Strix GeForce GTX 1080 Ti and Turbo GeForce GTX 1080 Ti graphics cards from Asus

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ section of the site for the radio amateur-designer. Article selection

▪ article by Michael Faraday. Famous aphorisms

▪ article Where does the OK sign mean a homosexual? Detailed answer

▪ article Functional composition of Luxor TVs. Directory

▪ article Manage 300 loads via LPT. Encyclopedia of radio electronics and electrical engineering

▪ article Chip TDA8362 in 3USCT and other TVs. 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