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What did the Dutch navigator Abel Tasman discover? Abel Tasman's contribution to geography
What did the Dutch navigator Abel Tasman discover? Abel Tasman's contribution to geography

Tasman Abel Janszon, famous Dutch navigator, discoverer of New Zealand, the Fiji and Bismarck archipelagos, as well as many other small islands. The island of Tasmania is named after him, located 240 km south of Australia, which was the very first to be visited by Abel Tasman. What else this famous traveler discovered, as well as where he visited - read about it in this material

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Einstein's postulates: teaching materials and elements of special theory
Einstein's postulates: teaching materials and elements of special theory

At the turn of the 19th and 20th centuries, the science of physics was in a critical situation. The way out of it was Einstein's rejection of the classical view of space and time. What used to seem clear and obvious, in fact, is changeable! Einstein's postulates prove that the quantities and concepts that were considered constants in non-relativistic physics, in this theory are adjacent to the category of relative

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  • Cell organelles
    Cell organelles

    A cell is a structural unit of a living organism that exists and "works" thanks to permanent structures - organelles. All cell organelles are interconnected into a single system, where each has a specific structure corresponding to the function it performs

  • Did Alaska need to be sold?
    Did Alaska need to be sold?

    What was the sale of Alaska really, what were the true reasons for this most mysterious deal of the 19th century? Was it necessary, or was Russia still forced to make this deal?

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What is a synonym and why is it needed
What is a synonym and why is it needed

Synonyms are words that have a similar or the same lexical meaning, but differ in spelling and sound. To understand what a synonym is, examples will help: cavalry - cavalry; big - huge, huge; to be afraid - to be afraid, to be shy; heat - heat

  • Two laws of light refraction. The phenomenon of total internal reflection

    Images in lenses, the operation of instruments such as microscopes and telescopes, the rainbow phenomenon and the deceptive perception of the depth of a body of water are all examples of the phenomenon of refraction of light. The laws describing this phenomenon are discussed in this article

  • Angles of refraction in different media

    One of the important laws of light wave propagation in transparent substances is the law of refraction, formulated at the beginning of the 17th century by the Dutchman Snell. The parameters that appear in the mathematical formulation of the phenomenon of refraction are the indices and angles of refraction. This article discusses how light rays behave when passing through the surface of different media

  • Szlachta corps: concept and definition

    The establishment of the gentry corps was necessary for teaching not only military, but also general education disciplines. The institution trained both soldiers and civilian officials. In this way, the first Russian gentry corps differed significantly from European

  • Thomas Hunt Morgan: biography, contribution to biology

    The greatest insights in biology of the 19th-20th centuries are considered to be the works of Charles Darwin on evolution, Gregor Mendel on heredity and variability, and Thomas Hunt Morgan on genes and chromosomes