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The activity series of metals as an expression of the basic properties of these elements
The activity series of metals as an expression of the basic properties of these elements

Metals are the most important and in many ways unique chemical elements. Almost all of them are characterized by such properties as good electrical conductivity, gloss, thermal conductivity. At the same time, separate groups can be distinguished among them, the characteristics of which will differ significantly. Some of these distinctive features formed the basis of such a concept as the "activity series of metals"

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Optical lenses (physics): definition, description, formula and solution
Optical lenses (physics): definition, description, formula and solution

There are objects that are capable of changing the density of the electromagnetic radiation flux falling on them, that is, either increasing it by collecting it at one point, or decreasing it by scattering it. These objects are called lenses in physics. Let's take a closer look at this question

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  • What is grain: jewelry grain in filigree patterns
    What is grain: jewelry grain in filigree patterns

    Historical evidence of the skills of our ancestors, who in various regions of the country knew what granulation is, is interesting. Modern jewelers are interested in studying and repeating unique old technologies in order to create new works of art

  • What is this - "candibober"? With and without a hat
    What is this - "candibober"? With and without a hat

    An image search for the word "candybober" returns only photographs of a lady in a red hat. Why? After all, this word is very old and has many related meanings. The Russian language is so rich that it seems surprising why the word "candibober" was invented

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Valois (dynasty). History of France
Valois (dynasty). History of France

Valois is a dynasty of French kings. Its ancestor is the brother of Philip IV the Handsome Charles IV. In this publication we will talk about the most famous representatives of the house of Valois

  • The word "road": synonyms, meaning

    "Road" is a common Slavic word. Derived from an Indo-European noun meaning "space cleared in the forest." In modern Russian, the word "road" is used in various meanings. There are many synonyms for it. In today's article, we recall the main ones

  • Darkness is the absence of light. Meaning, synonyms, antonyms and interpretation

    We used to interpret the word "darkness" unambiguously. Darkness is an unlit place, or, for example, one can give the concept a moral interpretation: darkness is the absence of goodness. In any case, in addition to darkness, the object of today's conversation has one more, now forgotten meaning. We will also consider it, synonyms and antonyms will also be presented

  • Arkhangelsk Cathedral of the Moscow Kremlin: description, history and interesting facts

    The article tells about the history of the Archangel Cathedral of the Moscow Kremlin, founded by the Grand Duke of Moscow Ivan III and erected under the patronage of his son Vasily III - the father of Ivan the Terrible. A brief outline of the main events associated with it is given

  • What is experience? Definition and types of experience

    Such a concept as experience is well known to each of us. This is not surprising, because all people, without exception, have it. Experience is an integral component of cognitive and life activity

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