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

Amazing wheel. Focus Secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

Comments on the article Comments on the article

Focus Description:

Cut out a regular octagon about four inches wide from thin cardboard and glue a cone glued from writing paper to each of its edges so that the holes face the same direction. Reinforce the center of this octagon on the axis. For example, thread an ordinary match through it, the ends of which, having pointed, place on two sticks vertically inserted into the board, the upper ends of which are cut with grooves so that the ends of the match do not come off.

Then take an empty glass and tilt it over the wide opening of one of the cones, as if pouring out some liquid: the octagon will begin to spin.

Secret of focus

The glass contains carbon dioxide. So that someone does not have an idea why an empty glass is covered with a mug, it is better to use a beer mug or other utensils with a permanent lid for this. Since carbon dioxide is heavier than air, pouring it into cones will produce the effect of poured water.

 We recommend interesting articles Section Spectacular tricks and their clues:

▪ Where is the key?

▪ Striking Wheel

▪ Focus with ring

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:

Machine for thinning flowers in gardens 02.05.2024

In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers. ... >>

Advanced Infrared Microscope 02.05.2024

Microscopes play an important role in scientific research, allowing scientists to delve into structures and processes invisible to the eye. However, various microscopy methods have their limitations, and among them was the limitation of resolution when using the infrared range. But the latest achievements of Japanese researchers from the University of Tokyo open up new prospects for studying the microworld. Scientists from the University of Tokyo have unveiled a new microscope that will revolutionize the capabilities of infrared microscopy. This advanced instrument allows you to see the internal structures of living bacteria with amazing clarity on the nanometer scale. Typically, mid-infrared microscopes are limited by low resolution, but the latest development from Japanese researchers overcomes these limitations. According to scientists, the developed microscope allows creating images with a resolution of up to 120 nanometers, which is 30 times higher than the resolution of traditional microscopes. ... >>

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 ... >>

Random news from the Archive

Deep Learning Technology for Time Series Analysis 20.03.2016

Fujitsu Laboratories Ltd. announced the development of a deep learning technology capable of analyzing time series of data with high accuracy. In promising applications for the Internet of Things, time series of data can vary significantly, so identifying patterns in their change turns out to be a very difficult task for a person.

“Machine learning is a central technology of artificial intelligence. In recent years, all attention in this area has been focused on deep learning technology as a way to automatically extract characteristic values ​​necessary for interpreting and evaluating phenomena,” the company noted. “Huge amounts of time series of data are collected from devices, especially in the era of the Internet of things. By applying deep learning to this data and classifying it with a high degree of accuracy, further analysis can be carried out with the prospect of creating new products and solutions and opening up new lines of business."

Hailed as a breakthrough in artificial intelligence, deep learning technology delivers highly accurate image and speech recognition, but is still only applicable to limited types of data, Fujitsu explained. In particular, until now it has been difficult to accurately classify automatically the volatile time series of data coming from devices connected to the Internet of things.

The company has developed a deep learning technology based on chaos theory and topology to automatically and accurately classify volatile time series data. This technology makes it possible to accurately process even complex temporal data with a large amplitude of changes.

The latest technology uses the following procedures for training and classification: graphical representation of time series data using chaos theory; quantitative description of diagrams using topology; training and classification using convolutional neural networks.

Other interesting news:

▪ Background music interferes with creativity

▪ A new way to obtain alternative fuel

▪ Gadget battery charges in one minute

▪ SLR camera Nikon D5000

▪ Mattress for fast falling asleep

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ site section Acoustic systems. Article selection

▪ article Strategy and tactics of behavior during an attack. Basics of safe life

▪ article What is a will-o'-the-wisp? Detailed answer

▪ article Kmin bristly. Legends, cultivation, methods of application

▪ article Frequency synthesizer for broadcasting FM-FM receiver based on LM7001J + PIC16F84A chips. Encyclopedia of radio electronics and electrical engineering

▪ article How many beads? Focus Secret

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