When does hair grow faster? Detailed answer

Free technical library

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

When does hair grow faster? Detailed answer

Big encyclopedia for children and adults

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

Comments on the article

Did you know?

When does hair grow faster?

Every day a person loses about a hundred hairs. Their normal growth rate is from a third to a half millimeter per day.

It has been observed that hair grows faster before noon than in the afternoon, and faster in summer than in winter.

Author: Mendeleev V.A.

Random interesting fact from the Great Encyclopedia:

Why is electricity called electricity?

The Greek philosopher Thales of Miletus noticed in about 600 BC that pieces of resin found on the shores of the Baltic Sea (which we call amber, and the ancient Greeks called electron), if rubbed against a piece of fur or wool, acquire the ability to attract feathers, threads or fluff.

Therefore, more than a thousand years later, the English physicist William Gilbert (1544-1603) proposed calling this force of mutual attraction electricity, introducing this term to science for the first time. Hilbert also found that, in addition to amber, other materials, such as glass, have a similar property.

Test your knowledge! Did you know...

▪ Who wrote the first opera?

▪ Who was the first European to see the Victoria Falls?

▪ Who has been unsuccessfully tried to kill 638 times?

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 chip is powered by light, heat and vibration 17.07.2012

The chip is able to extract energy from light, heat and vibration at the same time. Sensors with such chips will never require an internal power source - a battery or an accumulator - and can work forever. Scientists from the Massachusetts Institute of Technology have taken an important step towards the emergence of sensors without internal energy sources - batteries and accumulators, according to Physorg. The head of the Institute's Department of Electrical and Computer Engineering, Saurav Bandyopadhyay, has created a chip that can "draw" energy from the environment: light, heat and vibration.

Previous studies in this direction have already been carried out. A colleague of the scientist Anantha Chandrakasan learned to take electrical energy from three different sources separately: light, heat and vibration. In the new work, the scientist combined the ability to take energy from these sources in one microcircuit, and also increased the power efficiency.

The created chip can take energy from the movement of parts of the human body, for example, when walking, or from the temperature difference in the human body. Sensors with such chips can be used to take body parameters and work indefinitely. In turn, sensors installed on road and rail bridges, which inform the services about the state of the structure, can take energy from the vibration generated due to the passage of vehicles over the bridge.

The main difficulty, according to the developer, was to create an electrical circuit of the chip that could process several sources at once, differing in different capacities. As a rule, this problem is solved by a simple automatic selection of the source that gives the maximum power. According to Bandiopadhyay, this approach is less efficient because the energy of the remaining sources is wasted at this time. “Instead, we have learned to get energy from all sources at once,” the scientist comments. This was done with the help of capacitors that accumulate charge from other sources when the power is supplied from the main one.

The second task was to minimize the energy that the circuit itself consumes. Typically, power is supplied through a battery or high-capacity capacitor. Energy flows to them, and only then - to the main circuit. Bandyopadhyay made the circuit work directly from the energy source. According to him, this significantly increased efficiency.

Other interesting news:

▪ transparent solar cell

▪ Miniature Particle Accelerator Powering the Laser

▪ MSP430 with Full-Speed USB 2.0

▪ MAX6957 LED Display Driver

▪ Eggs for Vegetarians

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the site Tools and mechanisms for agriculture. Article selection

▪ article Accuracy (accuracy) - courtesy of kings. Popular expression

▪ article Do ants always live in colonies? Detailed answer

▪ article Handyman. Job description

▪ article Automotive VHF FM tuner. Encyclopedia of radio electronics and electrical engineering

▪ article Water candlestick. physical experiment

Leave your comment on this article:

All languages of this page

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