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

Which Star Wars character was given a look inspired in part by Einstein? 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?

Which Star Wars character was given a look inspired in part by Einstein?

Makeup artist Stuart Freeborn created all the characters in the original Star Wars trilogy. To model the doll of Master Yoda, Freeborn crossed two faces: taking his appearance as a basis, he added the characteristic wrinkles of Albert Einstein to it.

Authors: Jimmy Wales, Larry Sanger

 Random interesting fact from the Great Encyclopedia:

How did pneumatic tires come about?

Pneumatic tires were invented by Scottish veterinarian John Boyd Dunlop (1840-1921). In 1887, he created the first practical pneumatic, that is, air-filled chamber for a vehicle wheel. In 1889, he founded the Dunlop Rubber Company Ltd in London, which soon had branches around the world.

Soon Dunlop passed the patent for the pneumatic tire to his partner Harvey du Grosse, making almost no profit from his invention, which meant a revolution in transport.

 Test your knowledge! Did you know...

▪ How did the Pacific get its name?

▪ What are dog days?

▪ Which Koreans are ordered to go to a restaurant on April 14 and eat black noodles?

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:

Solidification of bulk substances 30.04.2024

There are quite a few mysteries in the world of science, and one of them is the strange behavior of bulk materials. They may behave like a solid but suddenly turn into a flowing liquid. This phenomenon has attracted the attention of many researchers, and we may finally be getting closer to solving this mystery. Imagine sand in an hourglass. It usually flows freely, but in some cases its particles begin to get stuck, turning from a liquid to a solid. This transition has important implications for many areas, from drug production to construction. Researchers from the USA have attempted to describe this phenomenon and come closer to understanding it. In the study, the scientists conducted simulations in the laboratory using data from bags of polystyrene beads. They found that the vibrations within these sets had specific frequencies, meaning that only certain types of vibrations could travel through the material. Received ... >>

Implanted brain stimulator 30.04.2024

In recent years, scientific research in the field of neurotechnology has made enormous progress, opening new horizons for the treatment of various psychiatric and neurological disorders. One of the significant achievements was the creation of the smallest implanted brain stimulator, presented by a laboratory at Rice University. Called Digitally Programmable Over-brain Therapeutic (DOT), this innovative device promises to revolutionize treatments by providing more autonomy and accessibility to patients. The implant, developed in collaboration with Motif Neurotech and clinicians, introduces an innovative approach to brain stimulation. It is powered through an external transmitter using magnetoelectric power transfer, eliminating the need for wires and large batteries typical of existing technologies. This makes the procedure less invasive and provides more opportunities to improve patients' quality of life. In addition to its use in treatment, resist ... >>

The perception of time depends on what one is looking at 29.04.2024

Research in the field of the psychology of time continues to surprise us with its results. Recent discoveries by scientists from George Mason University (USA) turned out to be quite remarkable: they discovered that what we look at can greatly influence our sense of time. During the experiment, 52 participants took a series of tests, estimating the duration of viewing various images. The results were surprising: the size and detail of the images had a significant impact on the perception of time. Larger, less cluttered scenes created the illusion of time slowing down, while smaller, busier images gave the feeling of time speeding up. Researchers suggest that visual clutter or detail overload can make it difficult to perceive the world around us, which in turn can lead to faster perception of time. Thus, it was shown that our perception of time is closely related to what we look at. Larger and smaller ... >>

Random news from the Archive

crystalline cellulose 02.07.2015

Everyone talks about cellulose fibers, pulp, but what is crystalline cellulose? The fiber consists of nanofibrils, nanofibrils - of polymer filaments, and in some areas long cellulose molecules are firmly connected by hydrogen bonds and highly ordered, while in others they have an amorphous structure.

Cellulose, purified from lignin and hemicellulose, is soft and fibrous. But if it is treated, for example, with a strong acid or an enzyme that destroys the disordered sections of the polymer, then miniature needles of nanometer diameter will remain, consisting of tightly packed fragments of glucose chains. These needles - crystalline nanocellulose (CNC) - are stronger than Kevlar and carbon fiber, and cost ten times less. Their output is about 30% of the pulp mass, they hope to bring the price in mass production to several dollars per kilogram. In addition, cellulose nanocrystals are transparent, and nanocrystalline cellulose films have interesting optical properties.

Cellulose fibers, or nanofibrils, of nanometer diameter and a few micrometers long, are also useful materials; they can be used to make nanocomposites, films for various filters, and solutions of cellulose nanofibers have unusual physical properties. Unlike many other nanoparticles, nanocellulose is completely biocompatible and does not inspire fear in the most ardent environmentalists. These materials have an important disadvantage - high hygroscopicity: even small particles of wood tend to bind water. But here the cards are already in the hands of chemists and technologists.

Hydrophobic, plastic and transparent nanocellulose films have recently been obtained by a group of Japanese researchers who have been working for many years with cellulose nanofibers oxidized with NaClO in the presence of (2,2,6,6-tetramethylpiperidin-1-yl)-oxyl (TEMPO or TO for short) and bromide. sodium. During oxidation, free surface -CH2OH groups are converted into carboxyl -COO-; the researchers called such nanofibers TOCN. In this work, the Japanese obtained films by drying an aqueous TOCN dispersion with quaternary alkylamines, molecules in which four alkyl chains are attached to one positively charged nitrogen atom. Alkylamines became counterions for carboxylate surface groups and imparted plasticity to the film - alkyl chains cover its surface and occupy the space between nanofibers.

In addition, the nanocellulose film became water-repellent: if tetra(n-butyl)-ammonium is used, then the contact angle with water reaches 100°. Such nanofibrils can be a filler in hydrophobic polymer matrices.

Other interesting news:

▪ Thermal sensor interface concept

▪ Samsung Family Hub refrigerator with Wi-Fi, cameras and screen

▪ Power transistors StrongIRFET2

▪ The phone will tell a lot about its owner

▪ The mobile phone recognizes the owner by gait

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ section of the site Radioelectronics and electrical engineering. Article selection

▪ article Stereograms from patterns. Encyclopedia of visual illusions

▪ article Who Invented the Aerostat? Detailed answer

▪ article Commemoration of World Day for Safety and Health at Work

▪ article Automotive probe-indicator. Encyclopedia of radio electronics and electrical engineering

▪ article Microcasting at home. Encyclopedia of radio electronics and electrical engineering

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