How many elementary particles are known at present? Detailed answer

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

How many elementary particles are known at present? Detailed answer

Big encyclopedia for children and adults

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

Did you know?

How many elementary particles are known at present?

Elementary particles are the smallest particles of physical matter. Ideas about elementary particles reflect the degree of knowledge of the structure of matter, which has been achieved by modern science.

A characteristic feature of elementary particles is their ability to mutual transformations - this does not allow us to consider elementary particles as the simplest, unchanging "bricks of the universe", similar to the atoms of Democritus. The number of particles that are called elementary in modern theory is very large. Each elementary particle (with the exception of truly neutral particles) has its own antiparticle.

In total, together with antiparticles, more than 350 elementary particles have been discovered. Of these, the photon, electron and muon neutrino, electron, proton and their antiparticles are stable. The remaining elementary particles spontaneously decay in a time from about 1000 seconds (for a free neutron) to a negligible fraction of a second, expressed as a fraction with one in the numerator and one with 22-24 zeros in the denominator (for resonances).

It is said that when a student asked Enrico Fermi about the name of some elementary particle, the great physicist replied: "Young man, if I could remember the names of all these particles, I would become a botanist."

Author: Kondrashov A.P.

Random interesting fact from the Great Encyclopedia:

What rule, derived by Leonardo, obeys the trunk and branches of trees?

Leonardo da Vinci derived the rule that the square of the diameter of a tree trunk is equal to the sum of the squares of the diameters of the branches, taken at a common fixed height. Later studies confirmed it with only one difference - the degree in the formula is not necessarily equal to 2, but lies in the range from 1,8 to 2,3. Traditionally it was believed that this pattern is due to the fact that a tree with such a structure has an optimal mechanism for supplying branches with nutrients. However, in 2010, the American physicist Christoph Elloy found a simpler mechanical explanation for the phenomenon: if we consider a tree as a fractal, then Leonardo's law minimizes the likelihood of breaking branches under the influence of wind.

Test your knowledge! Did you know...

▪ How big can tortoises get?

▪ How did the names of different types of clouds come about?

▪ What color was the pyramid of Cheops originally?

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:

Artificial leather for touch emulation 15.04.2024

In a modern technology world where distance is becoming increasingly commonplace, maintaining connection and a sense of closeness is important. Recent developments in artificial skin by German scientists from Saarland University represent a new era in virtual interactions. German researchers from Saarland University have developed ultra-thin films that can transmit the sensation of touch over a distance. This cutting-edge technology provides new opportunities for virtual communication, especially for those who find themselves far from their loved ones. The ultra-thin films developed by the researchers, just 50 micrometers thick, can be integrated into textiles and worn like a second skin. These films act as sensors that recognize tactile signals from mom or dad, and as actuators that transmit these movements to the baby. Parents' touch to the fabric activates sensors that react to pressure and deform the ultra-thin film. This ... >>

Petgugu Global cat litter 15.04.2024

Taking care of pets can often be a challenge, especially when it comes to keeping your home clean. A new interesting solution from the Petgugu Global startup has been presented, which will make life easier for cat owners and help them keep their home perfectly clean and tidy. Startup Petgugu Global has unveiled a unique cat toilet that can automatically flush feces, keeping your home clean and fresh. This innovative device is equipped with various smart sensors that monitor your pet's toilet activity and activate to automatically clean after use. The device connects to the sewer system and ensures efficient waste removal without the need for intervention from the owner. Additionally, the toilet has a large flushable storage capacity, making it ideal for multi-cat households. The Petgugu cat litter bowl is designed for use with water-soluble litters and offers a range of additional ... >>

The attractiveness of caring men 14.04.2024

The stereotype that women prefer "bad boys" has long been widespread. However, recent research conducted by British scientists from Monash University offers a new perspective on this issue. They looked at how women responded to men's emotional responsibility and willingness to help others. The study's findings could change our understanding of what makes men attractive to women. A study conducted by scientists from Monash University leads to new findings about men's attractiveness to women. In the experiment, women were shown photographs of men with brief stories about their behavior in various situations, including their reaction to an encounter with a homeless person. Some of the men ignored the homeless man, while others helped him, such as buying him food. A study found that men who showed empathy and kindness were more attractive to women compared to men who showed empathy and kindness. ... >>

Random news from the Archive

Hexgears Hyeku F2 Mechanical Keyboard 16.08.2023

Hexgears (Black Canyon) introduces the new Hyeku F2 mechanical keyboard, combining ergonomics and stylish design.

Hexgears Hyeku F2 features an ergonomic design designed to provide maximum user comfort. This is a design that respects the natural position of the wrist and forearm, reducing strain and movement while typing.

The keyboard body is made of high quality aluminum alloy in four available colors: Crimson Wine, Silver Azure, Coral Twilight and Ink Bamboo Gold.

The Hyeku F2 model offers a choice between two types of mechanical switches: Deep Sea BOX Switch Pro and BlackBerry Ice Cream Switch Pro. These switches provide a variety of tactile sensations when pressing the keys to suit different user preferences. GASKET structure technology and hot-swappable switches for each key provide more precise tuning and convenience.

The keyboard comes with a magnetic armrest, as well as an additional armrest made entirely of carbon aluminum fiber. The keyboard offers three connectivity options: Bluetooth, Wi-Fi (2.4G) and wired connection. In addition, it is compatible with devices running Windows, MacOS and Android.

The built-in 5800 mAh battery provides long battery life without the need for frequent charging, making the Hyeku F2 the perfect choice for those who value portability and efficiency. The Hexgears Hyeku F2 is priced at 1299 yuan ($179).

Other interesting news:

▪ Trash sensor

▪ DDR3L-1333 and DDR3L-1600 memory modules from Silicon Power

▪ Display for creating 3D holograms in the air

▪ Brain implant and prosthesis restore sense of touch to paralyzed man

▪ Viruses and algae can cause clouds

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the website job descriptions. Article selection

▪ article In our business, the most important thing is to escape in time. Popular expression

▪ article How many eyes does a four-eyed fish have? Detailed answer

▪ Storm article. Tourist tips

▪ article Devices and lamps of electrical lighting installations. Encyclopedia of radio electronics and electrical engineering

▪ article Smooth ignition of an incandescent lamp. Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:

All languages of this page

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