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 kind of slaves lived on the Great Slave Lake in Canada? 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 kind of slaves lived on the Great Slave Lake in Canada?

The Canadian province of Alberta contains the Great Slave Lake, the Little Slave Lake, and the Slave River, although there was no slavery or plantation in the area. All these names originated from the Slave Indian tribe who lived here, but changed due to confusion with the English word "slave", which means "slave".

Authors: Jimmy Wales, Larry Sanger

 Random interesting fact from the Great Encyclopedia:

What is humidity?

What happens when you put a carafe of ice water on the table? Moisture collects on the outside of the decanter. Where did she come from? Out of the air.

The fact is that there is always moisture in the air in the form of water vapor. In the case of the ice water carafe, these vapors condensed on the cold surface of the carafe and became noticeable. Water vapor is invisible in the air. The term "humidity" means the presence of water vapor in the air. They are everywhere, even over vast deserts.

Therefore, humidity always exists, but its value is different. There are many ways to express humidity, and there are two terms - "absolute humidity" and "relative humidity". Let's see what they mean.

"Absolute humidity" is the amount of water vapor per unit volume of air, that is, it is a certain number of particles in a cubic meter of air. But in practice it doesn't tell us anything. If you want to know how you will feel in certain conditions, the concept of "four units per cubic meter" will not tell us anything about whether the air is dry or humid. The more moisture from your body goes into the air, the better you feel. The intensity of air evaporation depends on temperature, and absolute humidity just says nothing about this air characteristic.

Relative humidity is expressed as a percentage. Relative humidity of one hundred percent means a state of complete saturation of the air or a given air space completely filled with water vapor. The higher the temperature, the more water vapor the air contains. Thus, on a hot day, a relative humidity of 90% means that there is a huge amount of moisture in the air, and on such a day you will feel unsatisfactory.

 Test your knowledge! Did you know...

▪ Can the virus be seen?

▪ Do I need to take vitamins?

▪ Why didn't anyone win the Nobel Peace Prize in 1948?

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

The mobile phone recognizes the owner by gait 10.02.2006

Perhaps Finland will soon begin production of a mobile phone that recognizes its owner by walking.

VTT has developed a prototype of the device, which has a motion sensor added. In a few hours, the phone gets acquainted with the manner of walking of its owner and then turns on only if it "understands" that it is in its hands. If the gait of the person who wants to use the phone seems unfamiliar to the device, it requires you to enter a password.

Alien is correctly recognized in 98% of cases. The phone mistakenly does not recognize the owner in only 4% of cases. But, like a pedometer, it is advisable to wear it on your belt, and not in your pocket or bag - then the features of the gait are smoothed out.

In addition, the proportion of errors increases if the owner of the phone switches from ordinary heels to stilettos, if the gait has changed due to a leg injury, and if the owner is under the influence of alcohol. But it is possible that in the latter case, he will not be able to enter the password either.

Other interesting news:

▪ extreme hardening

▪ New Kingmax memory cards record 4K2K video

▪ Work prolongs life

▪ flexible ceramics

▪ Flying car

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ section of the site Fundamentals of safe life (OBZhD). Article selection

▪ article Life safety. Crib

▪ article In what language are the words for brothels and gambling houses different only in accent? Detailed answer

▪ Kohlrabi article. Legends, cultivation, methods of application

▪ article We repair the computer power supply. Encyclopedia of radio electronics and electrical engineering

▪ article Electrification of water. physical experiment

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