Which animal is theoretically immortal? Detailed answer

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

Which animal is theoretically immortal? Detailed answer

Big encyclopedia for children and adults

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

Did you know?

Which animal is theoretically immortal?

Hydra polyp has a high regenerative capacity. If you cut the hydra into two parts, then they both regenerate to an adult hydra. It has been proven that hydras are theoretically immortal.

Authors: Jimmy Wales, Larry Sanger

Random interesting fact from the Great Encyclopedia:

Who Invented the Pencil?

Modern pencils are no more than 200 years old. Approximately 500 years ago, graphite was discovered in the mines of the city of Cumberland in England. It is believed that at the same time began to produce and graphite pencils.

In the German city of Nuremberg, the famous Faber family began making pencils from 1760 using graphite powder, but not entirely successfully. Finally, in 1795, a certain Comte invented pencils made from a mixture of graphite and certain types of clay and fired in a kiln. This technology is still used today.

"Simple" pencils are made of graphite, which leaves a dark mark on paper.

In the production of pencils, dry graphite powder is mixed with clay and water. The more clay, the harder the pencil, the more graphite, the softer the lead. After the mixture is formed into a paste-like paste, it is passed through a molding press, obtaining thin sticky ropes. They are straightened, cut to size, dried and sent to the kiln for firing. Wooden blanks from cedar or pine are cut in half lengthwise and a groove for the lead is cut out. Both halves with lead are then glued together. The boards are cut into pencils, their outer side is polished.

Today, more than 300 types of pencils are produced for various activities. You can buy simple pencils of different hardness or order pencils in 72 colors! There are pencils for writing on glass, fabric, cellophane, plastic and film. There are pencils used in construction that leave marks on outdoor surfaces for years!

Test your knowledge! Did you know...

▪ What is taxidermy?

▪ What was Billy the Kid's name?

▪ What is sung in the song Uno-uno-uno, un momento?

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:

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 ... >>

Wireless speaker Samsung Music Frame HW-LS60D 06.05.2024

In the world of modern audio technology, manufacturers strive not only for impeccable sound quality, but also for combining functionality with aesthetics. One of the latest innovative steps in this direction is the new Samsung Music Frame HW-LS60D wireless speaker system, presented at the 2024 World of Samsung event. The Samsung HW-LS60D is more than just a speaker system, it's the art of frame-style sound. The combination of a 6-speaker system with Dolby Atmos support and a stylish photo frame design makes this product the perfect addition to any interior. The new Samsung Music Frame features advanced technologies including Adaptive Audio that delivers clear dialogue at any volume level, and automatic room optimization for rich audio reproduction. With support for Spotify, Tidal Hi-Fi and Bluetooth 5.2 connections, as well as smart assistant integration, this speaker is ready to satisfy your ... >>

A New Way to Control and Manipulate Optical Signals 05.05.2024

The modern world of science and technology is developing rapidly, and every day new methods and technologies appear that open up new prospects for us in various fields. One such innovation is the development by German scientists of a new way to control optical signals, which could lead to significant progress in the field of photonics. Recent research has allowed German scientists to create a tunable waveplate inside a fused silica waveguide. This method, based on the use of a liquid crystal layer, allows one to effectively change the polarization of light passing through a waveguide. This technological breakthrough opens up new prospects for the development of compact and efficient photonic devices capable of processing large volumes of data. The electro-optical control of polarization provided by the new method could provide the basis for a new class of integrated photonic devices. This opens up great opportunities for ... >>

Random news from the Archive

Drobo 5N2 Storage 27.03.2017

Drobo, a company specializing in the production of external storage, introduced the Drobo 5N2 model.

The Drobo 5N2 networked storage has five 3,5" SATA drive bays. Supports hot-swap drives. It also includes one mSATA SSD for caching. To connect to the network, there are two Gigabit Ethernet ports with the possibility of aggregation.

Like other Drobo models, the novelty supports Drobo's BeyondRAID and Data-Aware Tiering technologies, which combine large volume, high performance and reliable data protection. The storage supports the Common Internet File System (CIFS), Server Message Block (SMB), and Apple Filing Protocol (AFP) protocols. With dimensions of 150,3 x 185,4 x 262,3 mm, the NAS without drives weighs 3,9 kg.

The MSRP for the Drobo 5N2 is $499.

Other interesting news:

▪ Fuel from the air

▪ Huawei 5G Mobile WiFi Pro Router

▪ MediaTek MT6589 single-chip system

▪ Tile Mate keychain to control things

▪ Who is on the surveillance video

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ site section Field strength detectors. Article selection

▪ article Not without good souls in the world. Popular expression

▪ article What is silver? Detailed answer

▪ article Turkish knot. Travel Tips

▪ article Knots of amateur radio equipment. Signal limiters, compressors. Directory

▪ article Modernization of radio receivers. 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