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Text attribution: theory and practice
Is it possible to determine the authorship of a literary text? Yes, and above all with the help of archival sources - historical documents. If it is necessary to find out to whom this or that article belongs, which can be under a pseudonym or not signed in principle, researchers look for the payroll in archives. Whichever name a person has given under the article, he or she has received money under his or her own name for it. So we can understand whether it was Pisarev or Chernyshevsky, Dostoevsky or Goncharov...
6 лет назад
How are nanoparticles used in medicine?
What is a nanoparticle? According to the definition of metrologists, the size of a nano-object should be less than 100 nanometres. One of the paradoxical examples is the bubble. In fact, it is also a nano-object: when we inflate a bubble, it changes color and its walls become almost invisible. As has been proven by optical scientists, at this point its wall thickness is less than 100 nanometres, and thus it is nanoscale. However, scientists in the life sciences are much more likely to deal with nanoparticles in the form of round or elongated balls...
6 лет назад
Thermoelectric materials
In the middle of the XIX century two very important discoveries were made. They were made by scientists, whose names these laws are called today. One was Thomas Zeebeck and the other was Jean Peltier. They discovered the same phenomenon that can be called reciprocal. One of them discovered that the application of potential differences causes temperature changes. Another discovered that the application of a temperature gradient causes a potential difference. Today we call these effects the laws of Peltier and Zeebeck...
6 лет назад
Polymers in medicine
Polymer science began its development and emerged as an independent field of knowledge in the mid-1950s. In Greek, polymer means "many parts". In other words, it is a substance in which several links-monomers are combined into one macromolecule. The nature of this material can be diverse, so its application will also be diverse. Two large groups of polymeric materials can be distinguished: synthetic and natural. Synthetic polymers are produced by chemical reactions. There are two main mechanisms for obtaining polymers: the polycondensation reaction and the polypropylene addition reaction...
6 лет назад
Artificial light sources
Today we'll talk about artificial light sources. They were invented by people to illuminate spaces where the sun is not present or when it has gone away. In order to understand what characteristics are important for artificial light sources, we need to consider the spectrum of the Sun. The Sun is a highly red-hot body that emits a continuous spectrum over a wide spectral range. In this case, its energy is mainly spent on heat, heating. Only the part of the spectral range that our eye can see is used for lighting...
6 лет назад
Civilization: 5 historical leaders
Being a powerful ruler is not easy: reforms, wars, conspiracies. We say that we read about the five leaders of world history on the Post-Science. Gilgamesh The famous hero Gilgamesh's Sumerian name was Bilga Mes, which means either "the offspring of the hero" or "the hero's ancestor". He is traditionally considered to be the fifth ruler of the first solar dynasty in Uruk, and his historical existence falls in the second half of the XXVII century BC. It was this time that the first references to it in clay tablets were made...
6 лет назад
What read about brain?
The human brain is responsible for processing information from the world around it, coordination, emotions, speech and many other functions. The PostScience team has collected books for you on the central nervous system. How has the human brain evolved in the process of evolution? How are the psychological tricks of the brain manifested and is it possible to change one's behavior? How are neurodegenerative diseases treated? Daniel Siegel, Mind. What does it mean to be human? M: Mann, Ivanov and...
6 лет назад
Reaching the architecture.
Weaving plant in the Ivanovo region and brewery in Kaliningrad, elevator in Chelyabinsk and metallurgical plant in Yekaterinburg. In the new series of the cycle, historian Alexander Mozhaev recounts the fascinating plants and factories that can still be seen in time. Industrial architecture is an underestimated and therefore little studied genre. Over the last twenty years, its value has been considerably rethought, the concepts of "industrial conversion" and "redevelopment" have become fashionable...
6 лет назад
Scarlatti's journey
Giuseppe Domenico Scarlatti was born in the autumn of 1685 in Naples in the family of the composer-star of the local opera school Alessandro Scarlatti and his wife Antonia. He began his career in Naples, then a part of Spain, where he spent another decade in Italy and most of his life at the Portuguese and Spanish courts: when his patroness, the infante Barbara, became the Spanish queen, Scarlatti followed her to Madrid. Scarlatti's journey began with vocal music, in the shadow of his famous father...
6 лет назад
Reading for 15 minutes: "Major Alexei Rjevski's seconds notebook
In the series "New sources on the history of Russia. Rossica Inedita" of the Higher School of Economics of the National Research University published a diary of an ordinary and little-known 18th century officer, Major Alexei Ivanovich Rzhevsky. The diaries of that time that survived us can be counted on our fingers, but this one is really unique: in addition to regimental life and hiking, it also describes the author's illnesses, health, treatment methods and self-medication. Rjevski's super detailed...
6 лет назад