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  • Boron

    Boron is the chemical element with the symbol B and atomic number 5. It is a metalloid, which means it has properties of both metals and nonmetals. Boron is known for its low density, high melting point, and strong chemical properties. Key Characteristics of Boron: Atomic Structure: Boron has five protons, five electrons, and either…

  • Beryllium

    Beryllium is the chemical element with the symbol Be and atomic number 4. It is a lightweight, steel-gray alkaline earth metal that is highly toxic. Beryllium is valued for its unique combination of properties, including its strength, low density, high melting point, and excellent thermal and electrical conductivity. Key Characteristics of Beryllium: Atomic Structure: Beryllium…

  • Lithium

    Lithium is the chemical element with the symbol Li and atomic number 3. It is a soft, silvery-white alkali metal that belongs to the group of elements known as the alkali metals. Lithium is the lightest metal and the least dense solid element at room temperature. Key Characteristics of Lithium: Atomic Structure: Lithium has three…

  • Helium

    Helium is the chemical element with the symbol He and atomic number 2. It is a colorless, odorless, and tasteless noble gas that is lighter than air. Helium is the second lightest element in the universe, after hydrogen, and is the second most abundant element in the universe overall. Key Characteristics of Helium: Atomic Structure:…

  • Hydrogen

    Hydrogen is the chemical element with the symbol H and atomic number 1. It is the lightest and most abundant element in the universe, making up about 75% of its elemental mass. Hydrogen is a colorless, odorless, and highly flammable gas at standard temperature and pressure. Key Characteristics of Hydrogen: Atomic Structure: Hydrogen consists of…

  • Dmitri Mendeleev

    Dmitri Mendeleev (1834-1907) was a Russian chemist and inventor who is best known for his development of the periodic table of elements. He is considered one of the most influential scientists in the field of chemistry and made significant contributions to our understanding of the elements and their organization. Key Contributions and Achievements of Dmitri…

  • Gottfried Wilhelm Leibniz

    Gottfried Wilhelm Leibniz (1646-1716) was a German philosopher, mathematician, and polymath who made significant contributions to various fields, including mathematics, philosophy, logic, and metaphysics. He is recognized as one of the most important intellectuals of the 17th century and is often regarded as a counterpart to Isaac Newton in the development of calculus. Key Contributions…

  • Isaac Newton

    Isaac Newton (1643-1727) was an English physicist, mathematician, astronomer, and natural philosopher who is widely recognized as one of the most influential scientists in history. His groundbreaking contributions to physics and mathematics laid the foundation for modern science and revolutionized our understanding of the natural world. Key Contributions and Achievements of Isaac Newton: Laws of…

  • The confidence/significance level implies a certain cost ratio between type I error and type II error: For a stronger focus on decision theory in psychological assessment

    Psychological assessment often requires concrete decisions, e.g. whether a person is “below the norm” in some psychological domain. It is still common that practitioners directly compare the test score with some theoretical norm value (e.g., one standard deviation below the mean). In a literature review, we show that all German textbooks on Psychological Assessment recommend…

  • Critical psychologies and climate change

    This article is a review of recent contributions in critical psychology, and its close cousins, critical social psychology, critical community psychology and liberation psychology, to understandings of the human response to climate change. It contrasts critical psychology with mainstream psychology in general terms, before introducing a critical psychological perspective on climate change. Central to this…

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