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

Who pulled teeth before the advent of dentists? 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?

Who pulled teeth before the advent of dentists?

Modern dentistry has a very young age. During the Middle Ages and part of the 19th century, it was practiced by members of other professions, most commonly general doctors and barbers. Although all the skill of hairdressers was manifested only in the extraction of teeth.

Authors: Jimmy Wales, Larry Sanger

 Random interesting fact from the Great Encyclopedia:

How did a French engineer save the Great Pyramids from dismantling for building materials?

Louis Linant de Belfon, before becoming the chief engineer for the construction of the Suez Canal, commanded the construction of dams and the laying of irrigation canals on the Nile. To optimize the work, the ruler of Egypt, Muhammad Ali Pasha, suggested using a stone from the Great Pyramids. Belfon was against it, but he understood that in case of refusal, the pasha would hire another engineer. In order to save the Pyramids, he provided fictitious calculations, according to which it turned out that it would be cheaper to extract material from the quarries.

 Test your knowledge! Did you know...

▪ What happens when we sleep?

▪ What is a Gordian knot?

▪ About the death of which diplomat and politician they spoke: I wonder why he needed it?

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:

Alcohol content of warm beer 07.05.2024

Beer, as one of the most common alcoholic drinks, has its own unique taste, which can change depending on the temperature of consumption. A new study by an international team of scientists has found that beer temperature has a significant impact on the perception of alcoholic taste. The study, led by materials scientist Lei Jiang, found that at different temperatures, ethanol and water molecules form different types of clusters, which affects the perception of alcoholic taste. At low temperatures, more pyramid-like clusters form, which reduces the pungency of the "ethanol" taste and makes the drink taste less alcoholic. On the contrary, as the temperature increases, the clusters become more chain-like, resulting in a more pronounced alcoholic taste. This explains why the taste of some alcoholic drinks, such as baijiu, can change depending on temperature. The data obtained opens up new prospects for beverage manufacturers, ... >>

Major risk factor for gambling addiction 07.05.2024

Computer games are becoming an increasingly popular form of entertainment among teenagers, but the associated risk of gaming addiction remains a significant problem. American scientists conducted a study to determine the main factors contributing to this addiction and offer recommendations for its prevention. Over the course of six years, 385 teenagers were followed to find out what factors may predispose them to gambling addiction. The results showed that 90% of study participants were not at risk of addiction, while 10% became gambling addicts. It turned out that the key factor in the onset of gambling addiction is a low level of prosocial behavior. Teenagers with a low level of prosocial behavior do not show interest in the help and support of others, which can lead to a loss of contact with the real world and a deepening dependence on virtual reality offered by computer games. Based on these results, scientists ... >>

Traffic noise delays the growth of chicks 06.05.2024

The sounds that surround us in modern cities are becoming increasingly piercing. However, few people think about how this noise affects the animal world, especially such delicate creatures as chicks that have not yet hatched from their eggs. Recent research is shedding light on this issue, indicating serious consequences for their development and survival. Scientists have found that exposure of zebra diamondback chicks to traffic noise can cause serious disruption to their development. Experiments have shown that noise pollution can significantly delay their hatching, and those chicks that do emerge face a number of health-promoting problems. The researchers also found that the negative effects of noise pollution extend into the adult birds. Reduced chances of reproduction and decreased fertility indicate the long-term effects that traffic noise has on wildlife. The study results highlight the need ... >>

Random news from the Archive

AT76C113 - a new family of digital video camera processors 08.04.2003

ATMEL Corporation announced the release of a new family of digital video camera processors AT76C113. All functions necessary for the operation of a digital camera are combined in one chip (image capture, processing, compression, storage, display, operation control).

The AT76C113 processor supports all flash card interfaces. It has all the necessary peripherals, including TV output, USB, UART, SPI, digital audio interfaces, LCD indicator interface. The processor supports cameras up to 3 megapixels.

Other interesting news:

▪ Laser shoe fitting

▪ Catching microbes with a magnet

▪ Gaming platform for virtual games Virtuix Omni

▪ Smartphone LG G Pro Lite Dual (D686)

▪ Down with pay phones

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ section of the website Electrotechnical materials. Article selection

▪ article Crawling in a plastunsky way. Popular expression

▪ article Is it true that the nightingale only sings at night? Detailed answer

▪ article Ngorongoro Crater. Nature miracle

▪ article Automatic - lighting switch. Encyclopedia of radio electronics and electrical engineering

▪ article A simple modem for HF and VHF packet communications. 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