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Britannica
https://www.britannica.com/science/microtome
Microtome | instrument | Britannica
Microtome | instrument | Britannica. Contents. microtome. instrument. Also known as: ultramicrotome. Learn about this topic in these articles: invention by His. In Wilhelm His. In 1865 His invented the microtome, a mechanical device used to slice thin tissue sections for microscopic examination.
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Britannica
https://www.britannica.com/technology/microscope
Microscope | Types, Parts, History, Diagram, & Facts | Britannica
WEB3 giorni fa · The most familiar type of microscope is the optical, or light, microscope, in which glass lenses are used to form the image. Optical microscopes can be simple, consisting of a single lens, or compound, consisting of several optical components in line. The hand magnifying glass can magnify about 3 to 20×. Single-lensed simple …
What is a microscope?
A microscope is an instrument that makes an enlarged image of a small object, thus revealing details too small to be seen by the unaided eye. The m...
What does “microscope” mean?
The word “microscope” comes from the Latin “microscopium,” which is derived from the Greek words “mikros,” meaning “small,” and “skopein,” meaning...
Who invented the microscope?
It is not definitively known who invented the microscope. However, the earliest microscopes seem to have been made by Dutch opticians Hans Janssen...
What are microscope slides?
Microscope slides are small rectangles of transparent glass or plastic, on which a specimen can rest so it can be examined under a microscope.
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Microscopes - National Geographic Society
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Who invented the microtome?
In 1865 His invented the microtome, a mechanical device used to slice thin tissue sections for microscopic examination. He was the author of Anatomie menschlicher Embryonen, 3 vol. (1880–85; “Human Embryonic Anatomy”), considered the first accurate and exhaustive study of the development of the human embryo.
Microtome | instrument | Britannica
britannica.com
Why was rotary microtome invented?
…the development of the rotary microtome for slicing very thin sections of tissue for microscope viewing, and the development of stain techniques are refinements of previously known methods. The invention of the phase microscope made possible the study of unfixed and unstained living material—hopefully nearer its natural state. The development…
Microtome | instrument | Britannica
britannica.com
What is a transmission electron microscope (TEM)?
Transmission electron microscope (TEM). A scientist working on a high-resolution scanning electron microscope in a high-tech clean-room environment. Other types of microscopes use the wave nature of various physical processes. The most important is the electron microscope, which uses a beam of electrons in its image formation.
Microscope | Types, Parts, History, Diagram, & Facts | Britannica
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Britannica
https://www.britannica.com/science/atom
Atom | Definition, Structure, History, Examples, Diagram, & Facts
Overview
Atomic model
Most matter consists of an agglomeration of molecules, which can be separated relatively easily…
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As noted in the introduction to this article, an atom consists largely of empty space. The nucleus is the positively charged centre of an atom and contains most of its mass. It is composed of protons, which have a positive charge, and neutrons, which have no charge. Protons, neutrons, and the …
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Britannica
https://www.britannica.com/biography/Michael-Faraday
Michael Faraday | Biography, Inventions, & Facts | Britannica
WEB23 apr 2024 · Michael Faraday (born September 22, 1791, Newington, Surrey, England—died August 25, 1867, Hampton Court, Surrey) was an English physicist and chemist whose many experiments contributed greatly to the understanding of electromagnetism. Faraday, who became one of the greatest scientists of the 19th …
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Britannica
https://www.britannica.com/science/mitochondrion
Mitochondrion | Definition, Function, Structure, & Facts
WEB10 mag 2024 · What is a mitochondrion? What do the mitochondria do? Where are the mitochondria found? mitochondrion, membrane-bound organelle found in the cytoplasm of almost all eukaryotic cells (cells with clearly defined nuclei), the primary function of which is to generate large quantities of energy in the form of adenosine triphosphate (ATP).
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What is a mitochondrion?
A mitochondrion is a round to oval-shaped organelle found in the cells of almost all eukaryotic organisms. It produces energy, known as ATP, for th...
What do the mitochondria do?
Known as the “powerhouses of the cell,” mitochondria produce the energy necessary for the cell’s survival and functioning. Through a series of chem...
Where are the mitochondria found?
Mitochondria are found in the cells of nearly every eukaryotic organism, including plants and animals. Cells that require a lot of energy, such as...
Britannica
https://www.britannica.com/science/science
Science | Definition, Disciplines, & Facts | Britannica
WEB25 mag 2024 · science, any system of knowledge that is concerned with the physical world and its phenomena and that entails unbiased observations and systematic experimentation. In general, a science involves a pursuit of knowledge covering general truths or the operations of fundamental laws. Science can be divided into different branches based …
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The Editors of Encyclopaedia Britannica
Philosophy of Science
Britannica
https://www.britannica.com/science/chromosome
Chromosome | Structure & Function | Britannica
WEB1 giorno fa · Recent News. May 29, 2024, 11:46 PM ET (National Institutes of Health (NIH) (.gov)) Scientists generate the first complete chromosome sequences from non-human primates. chromosome, the microscopic threadlike part of the cell that carries hereditary information in the form of genes. A defining feature of any chromosome is its compactness.
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Britannica
https://www.britannica.com/technology/microprocessor
Microprocessor | Definition & Facts | Britannica
WEB25 apr 2024 · Robert Noyce. Related Topics: Pentium. Intel 1103. M1. register. Intel 8088. microprocessor, any of a type of miniature electronic device that contains the arithmetic, logic, and control circuitry necessary to perform the functions of a digital computer’s central processing unit.
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Britannica
https://www.britannica.com/summary/Microsoft-Corporation
Microsoft Corp. summary | Britannica
WEBMicrosoft Corp., U.S. computer firm, the leading developer of personal-computer software systems and applications. Microsoft, headquartered in Redmond, Wash., also publishes books and multimedia titles and manufactures hardware. It was founded in 1975 by Bill Gates and Paul G. Allen (b. 1954), who adapted BASIC for use on personal computer s.
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Britannica
https://www.britannica.com/science/atmosphere
Atmosphere | Definition, Layers, & Facts | Britannica
WEB15 mag 2024 · atmosphere, the gas and aerosol envelope that extends from the ocean, land, and ice -covered surface of a planet outward into space. The density of the atmosphere decreases outward, because the gravitational attraction of the planet, which pulls the gases and aerosols (microscopic suspended particles of dust, soot, smoke, or …
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