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

Which medieval king fought like a knight even when he was blind? 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?

Which medieval king fought like a knight even when he was blind?

John of Luxembourg in the 14th century was the Czech king for almost forty years. But he was almost never in the Czech Republic, instead he traveled around Europe and participated in various battles either for the French or for the German knights. Even blind, he took part in the Battle of Crécy, tying his reins to those of two other knights. In this battle, he died.

Authors: Jimmy Wales, Larry Sanger

 Random interesting fact from the Great Encyclopedia:

Who invented the ballpoint pen?

a) Mr Biro.
b) Mr. Bish.
c) Mr Quiet.
d) Mr Loud.

Before the era of ballpoint pens, writing was considered a rather dangerous and troublesome task. Quills had to be regularly dipped in inkwells, pens were constantly leaking, and ink (which in English is called Indian ink, "Indian ink", but invented in China) took too long to dry on paper. All of these problems were first raised in a patent filed on October 30, 1888 by a leather tanner named John J. Loud. It was he who created a pen with a rotating ball instead of a sharp tip, which continuously "bathed" in the ink coming from a special container. And although his pen still leaked, it was much more comfortable to write on the skin with it than a regular fountain pen. Unfortunately, Laud did not manage to bring his invention to mind. Otherwise, we would be talking about disposable "lauds", and not about ball "biros".

The Hungarian Laszlo Biro (1899-1985), although he studied medicine, never received a doctorate. Before seriously devoting himself to journalism, Biro tried a wide variety of activities, including hypnosis and car racing.

Puzzled by the difference in drying time between printing ink and the contents of a fountain pen, Laszlo Biro and his chemist brother Georgy tried fitting the pen with a tiny ball bearing that successfully "pulled out" the printing ink as it rotated. Thus the famous "biro" was born.

The brothers patented the invention in Hungary in 1938, and in 1940, fleeing the Nazis, they emigrated to Argentina, where they patented the ballpoint pen again in 1943. One of their first customers was the Royal Air Force of Great Britain, delighted with the excellent functionality of the "biro" even at high altitude. Soon the name "biro" became synonymous in Britain with a ballpoint pen.

The first widely sold "biros" were made in 1945. At the same time, Biro sold the license for the production of ballpoint pens to a Frenchman named Marcel Bich (Bich).

Bish named his company "BiC" and, after slightly modifying the Biro model, mass-produced an incredibly cheap six-sided plastic fountain pen.

BiC is still the world's leading manufacturer and marketer of ballpoint pens, with annual sales of 1,38 billion euros. In 2005, their 100 billionth fountain pen was sold. BiC's bestseller, the Kristall brand, sells 14 million copies a day.

As a mark of respect for Biro, Argentines - who, by the way, call fountain pens birome - celebrate National Inventor's Day on September 29, the date of his birth.

 Test your knowledge! Did you know...

▪ How did the ensembles appear?

▪ Where do turkeys come from?

▪ What animal, besides the bear, do cartoonists often associate Russia with?

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

Apple TV 25.12.2012

Apple TV is a small box that allows you to watch movies and series in HD quality on your TV screen. It supports playback of content from the iTunes Store, as well as playback of personal videos, music and photos from Mac, iPad, iPhone and iCloud cloud service.

The cost of Apple TV in Russia is 5290 rubles. Earlier it was reported that the device will officially appear on the Russian retail market before the end of 2012. Before that, it was sold by online stores that received devices through unofficial supply channels. The price of Apple TV in them is on average kept at the level of 4990 rubles.

Earlier in December, Apple launched the sale of films and music in Russia, as well as the rental of films via the Internet (the user is given 30 days to start watching a movie and 48 hours to finish watching). Apple TV makes it all possible.

The Apple TV was last updated in March 2012. The new model received Full HD support (previously limited to 720p resolution), received an updated interface and connection to the iCloud cloud service.

Other interesting news:

▪ Helicopter with laser light

▪ Enhanced Solar Impulse solar-powered aircraft

▪ Photonic crystal invisibility cloak

▪ Sensory Compensation Mechanism

▪ Playing with dolls develops empathy

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ radio section of the website. Article selection

▪ article Perestroika. Popular expression

▪ article Which election was won by the party that declared in advance that it would not keep its promises? Detailed answer

▪ article Watermelon cucumber. Legends, cultivation, methods of application

▪ article Radio transmitter of increased power at 27-28 MHz. Encyclopedia of radio electronics and electrical engineering

▪ article Heads or Tails? 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