What are the dimensions of the tennis court? Detailed answer

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

What are the dimensions of the tennis court? Detailed answer

Big encyclopedia for children and adults

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

Did you know?

What are the dimensions of the tennis court?

The rectangular tennis court is 23,77 m long and 8,23 m wide. It is divided in the middle by a 0,91 m high net. For doubles, two side galleries are added, which expand the field to 10,97 m. The ball has a diameter of 6,35 to 6,67 cm and a weight of 56,7 to 58,4 g.

Author: Mendeleev V.A.

Random interesting fact from the Great Encyclopedia:

Where does an orchid grow, which spends its entire life cycle underground?

Rizantella Gardner, an orchid family endemic to Australia, blooms with small maroon flowers. Its uniqueness lies in the fact that the plant spends all life stages underground. It is also pollinated by underground insects - such as termites.

Test your knowledge! Did you know...

▪ How was the hole in the sewing machine needle transferred to a sharp end?

▪ Why is the mass of a person at the equator approximately 1% less than at the pole?

▪ Who and where conducted partisan activity until 1974, not knowing about the end of the Second World War?

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

Lovot - robot for love 23.12.2018

The Japanese company Groove X introduced the Lovot robot. It features two LCD screens in the eye area. At the moment when a person picks up a nice device, two wheels on which he can move are hidden in the case. The catch is equipped with a camera, 4 microphones, as well as pressure, light, humidity and heat sensors.

The robot will be available for purchase at the end of 2019, but you can place orders now. The cost of new items is about 3000 US dollars.

A set of sensors helps Lovot learn to respond to his master's touches and various events. This is helped by three processors (two 4-core and one 2-core) and 8 GB of RAM. The robot weighs 4 kilograms, and the dimensions did not let us down (43 cm in height and 25 in width). The device can communicate with other gadgets via Wi-Fi, as well as using Bluetooth and mobile network. Lovot can move freely around the house for 45 minutes, then it must be charged wirelessly using a special module, which also has 1TB of memory, where the robot stores the collected data.

Mascot robots are very popular in Japan, and the trend is slowly but surely spreading to the West. Toys usually have big eyes, just like anime characters. Similar devices aimed at reducing stress through "cuddling" are made by another Japanese company - AIST. The PARO therapy robot, like Lovot, is interactive. This is a plush device in the shape of a small seal, with the sole purpose of making life more joyful.

Other interesting news:

▪ Wireless power transfer technology between consumer devices

▪ Slide headphones never get tangled

▪ Holographic buttons for contactless control of equipment

▪ New FLUKE Insulation Testers

▪ Created the highest rocket

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the site Medicine. Selection of articles

▪ article by Antisthenes of Athens. Famous aphorisms

▪ article What weighs more - the food consumed by a person per day, or the air that he inhales over the same period of time? Detailed answer

▪ Article Black pepper. Legends, cultivation, methods of application

▪ article Connecting an electric heater. Encyclopedia of radio electronics and electrical engineering

▪ Article The complexity of light. physical experiment

Leave your comment on this article:

All languages of this page

Home page | Library | Articles | Website map | Site Reviews