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 made Japan, which pursued a policy of self-isolation for more than two centuries, open its ports to foreign ships? 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 made Japan, which pursued a policy of self-isolation for more than two centuries, open its ports to foreign ships?

Since 1640, Japan pursued a policy of self-isolation and allowed only Dutch merchant ships into its ports in order to receive information from them about European technical innovations.

This policy came to an end in July 1853, when a squadron of US ships under the command of Commodore Matthew Colbright Perry entered Tokyo harbor. Threatening military action, Perry demanded that Japan open ports to American merchant ships. He left time for reflection until the end of the year.

In January 1854, an agreement was concluded between Japan and the United States, according to which American ships received the right to enter two Japanese ports - Shimoda and Hakodate. In 1858, the Americans achieved the opening of six more Japanese ports for American ships.

In 1855, the Russian-Japanese Treaty on Trade and Borders was signed, according to which the ports of Shimoda, Hakodate and Nagasaki were opened for Russian ships.

Author: Kondrashov A.P.

 Random interesting fact from the Great Encyclopedia:

What speed did the winner of the first auto race in the USA show?

The winner of the first automobile races, which took place in the United States in 1895, showed an unprecedented speed for that time - 24 kilometers per hour.

Just 15 years later, at the beginning of 1911, the Benz racing car set a speed record - 228 kilometers per hour.

 Test your knowledge! Did you know...

▪ How much energy is in a glass of hot tea?

▪ Where and when was the person who committed the murder in front of witnesses fully acquitted?

▪ What is the name of the main character in Pushkin's novel The Queen of Spades?

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

Chinese analogue of GPS 02.01.2013

The People's Republic of China has officially opened for public use in the Asia-Pacific region its alternative to global positioning systems GPS and GLONASS called Beidou (BeiDou Navigation Satellite System, abbreviated as BDS). The name of the Beidu system is translated from Chinese as the constellation Ursa Major. Previously, access to it was limited only to the military and government agencies of the PRC. Representatives of the official circles of the country said that by 2020, the percentage of use in the Celestial Empire of the national positioning system will be 70-80%. Analysts say that in 2011, the share of the GPS system in the local market was 95%.

Beidu allows you to determine the location of the user with an accuracy of 10 meters, and the speed of movement with an accuracy of 20 centimeters per second. The signal synchronization time is about 50 nanoseconds. However, while the cost of electronic filling for the Beidu system is several times higher than similar solutions for GPS. However, prices tend to fall, and the Chinese government believes that local manufacturers will quickly master the production of mass-produced consumer systems for Beidu.

There are currently six satellites of the Beidu system in orbit. The PRC authorities plan to bring the constellation to 46 satellites over the next decade. The first BDS satellite was launched by China in 2000. The last of the current constellation was launched into orbit on October 25, 2012. A preliminary version of Beidu has been in use since 2003 for traffic control, weather forecasting and the needs of national rescue services.

Other interesting news:

▪ Cow toilet

▪ How is chess played

▪ Instant Blood

▪ Viruses get sick too

▪ Antiseptic from water

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ site section Parameters of radio components. Article selection

▪ Philosophy article. Lecture notes

▪ article Why is bread called the pillar of life? Detailed answer

▪ article Working on a CITOBORMA type drilling machine. Standard instruction on labor protection

▪ article Lacquer for straw hats. Simple recipes and tips

▪ article Field-effect transistors of the KP737 series. 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