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  2. Real image - Wikipedia

    en.wikipedia.org/wiki/Real_image

    In optics, an image is defined as the collection of focus points of light rays coming from an object. A real image is the collection of focus points actually made by converging/diverging rays, while a virtual image is the collection of focus points made by extensions of diverging or converging rays. In other words, a real image is an image ...

  3. Virtual image - Wikipedia

    en.wikipedia.org/wiki/Virtual_image

    In optics, the image of an object is defined as the collection of focus points of light rays coming from the object. A real image is the collection of focus points made by converging rays, while a virtual image is the collection of focus points made by backward extensions of diverging rays. In other words, a virtual image is found by tracing ...

  4. Mirror image - Wikipedia

    en.wikipedia.org/wiki/Mirror_image

    A mirror image (in a plane mirror) is a reflected duplication of an object that appears almost identical, but is reversed in the direction perpendicular to the mirror surface. As an optical effect, it results from specular reflection off from surfaces of lustrous materials, especially a mirror or water. It is also a concept in geometry and can ...

  5. Physics - Wikipedia

    en.wikipedia.org/wiki/Physics

    Physics was known as natural philosophy until the late 18th century. [c] By the 19th century, physics was realized as a discipline distinct from philosophy and the other sciences. Physics, as with the rest of science, relies on the philosophy of science and its "scientific method" to advance knowledge of the physical world. [40]

  6. Science education - Wikipedia

    en.wikipedia.org/wiki/Science_education

    Educational research. Science education is the teaching and learning of science to school children, college students, or adults within the general public. The field of science education includes work in science content, science process (the scientific method), some social science, and some teaching pedagogy.

  7. Refracting telescope - Wikipedia

    en.wikipedia.org/wiki/Refracting_telescope

    Refracting telescope. A refracting telescope (also called a refractor) is a type of optical telescope that uses a lens as its objective to form an image (also referred to a dioptric telescope). The refracting telescope design was originally used in spyglasses and astronomical telescopes but is also used for long-focus camera lenses.

  8. Theoretical physics - Wikipedia

    en.wikipedia.org/wiki/Theoretical_physics

    Theoretical physics is a branch of physics that employs mathematical models and abstractions of physical objects and systems to rationalize, explain, and predict natural phenomena. This is in contrast to experimental physics, which uses experimental tools to probe these phenomena. The advancement of science generally depends on the interplay ...

  9. Branches of physics - Wikipedia

    en.wikipedia.org/wiki/Branches_of_physics

    atmospheric physics is the application of physics to the study of the atmosphere; space physics is the study of plasmas as they occur naturally in the Earth's upper atmosphere (aeronomy) and within the Solar System; biophysics, studying the physical interactions of biological processes; chemical physics, the science of physical relations in ...

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