Menu English Ukrainian russian Home

Free technical library for hobbyists and professionals Free technical library


BIG ENCYCLOPEDIA FOR CHILDREN AND ADULTS
Free library / Directory / Big encyclopedia for children and adults

What are Black Thursday and Black Friday? Detailed answer

Big encyclopedia for children and adults

Directory / Big encyclopedia. Questions for quiz and self-education

Comments on the article Comments on the article

Did you know?

What is Black Thursday and Black Friday?

In August 1869, as a result of stock exchange fraud, the purpose of which was to increase railroad rates, a lot of gold was thrown into the US market (which would have stabilized it). By July 1869, the rate of gold rose by 65%, and on September 24, 1869, "Black Friday" broke out: the rate collapsed immediately by 30%. A direct consequence of "Black Friday" was the temporary decline of the New York Stock Exchange and the long-term decline of railroad shares, which turned from respectable paper into a speculative instrument.

The US Great Depression was preceded by "Black Thursday": the stock market crash of 1929. The precipitous fall in stock prices began on October 24, 1929 ("Black Thursday") and continued on a catastrophic scale on October 28 ("Black Monday") and October 29 ("Black Tuesday"). ").

Author: Mendeleev V.A.

 Random interesting fact from the Great Encyclopedia:

Why did the rebellious Parisians in 1789 need to take the Bastille?

The French national holiday on July 14 is known as Bastille Day. However, on this day in 1789, the rebellious Parisians had no goal at all costs to seize this fortress or to release the prisoners, of whom there were only seven at that time. It’s just that the Bastille contained large stocks of gunpowder, which the townspeople needed to fight with government troops. In addition to gunpowder, the revolutionaries demanded that the commandant remove the cannons from the embrasures, and after the refusal a firefight ensued, culminating in the surrender of the garrison.

 Test your knowledge! Did you know...

▪ Where and when was the first international film festival held?

▪ Where was the guillotine invented?

▪ What endless inscription was on Mayakovsky's gift to Lilya Brik?

See other articles Section Big encyclopedia. Questions for quiz and self-education.

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

Alcohol instead of gasoline 01.01.2013

Will the air in big cities become cleaner if cars switch from petroleum fuel to biological ethyl alcohol? After all, burning alcohol gives only water and carbon dioxide, without sulfur and nitrogen oxides. An unintentional experiment conducted every year in Brazil's largest city, São Paulo, shows that to improve the atmosphere, you need to have a lot of "alcohol" cars.

There are about six million cars in São Paulo, of which one and a half million are capable of running on both gasoline and alcohol. The price of gasoline is regulated by the state regardless of world oil prices and is stable throughout the year, while the price of alcohol fluctuates, falling every time the sugar cane is harvested. Therefore, virtually all car owners who are able to switch to alcohol do so for several months every year.

Brazilian environmentalists analyzed data on air pollution regularly collected at 22 stations around the city. It turned out that during the "alcohol season" air quality does not improve, that is, in order for the effect to become noticeable, more than a quarter of the fleet of cars must run on alcohol.

Other interesting news:

▪ red feather gene

▪ Tetraneutron discovered

▪ Poetry and health

▪ Smart payment card BrilliantTS

▪ SAFT lithium batteries for extreme temperatures

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ site section Indicators, sensors, detectors. Article selection

▪ Article Tea bag. History of invention and production

▪ article Who helped Shishkin draw bears in the painting Morning in a pine forest? Detailed answer

▪ article Foxtail millet. Legends, cultivation, methods of application

▪ article Octane-corrector. Encyclopedia of radio electronics and electrical engineering

▪ article Flying scarf. 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