geometric optics

(noun)

Optics that describes light propagation in terms of "rays".

Related Terms

  • refraction
  • reflection

Examples of geometric optics in the following topics:

  • The Ray Aspect of Light

    • This is called geometric optics.
    • Since the movement of the light rays can be shown geometrically, if a mirror is one-half your height, you could see your whole body in the reflection.
  • Properties of Quartz and Glass

    • Glasses are typically brittle and optically transparent.
    • Glass has the ability to refract, reflect, and transmit light according to the principles of geometrical optics.
  • Refraction Through Lenses

    • Lenses are found in a huge array of optical instruments, ranging from the simple magnifying glass to a camera lens to the lens of the human eye.
    • Additionally, we will explore how image locations and characteristics can be quantified with the help of a set of geometric optics equations.
  • Cézanne

    • Cézanne was interested in the simplification of naturally occurring forms to their geometric essentials, wanting to "treat nature by the cylinder, the sphere, the cone."
    • Cézanne's explorations of geometric simplification and optical phenomena inspired Picasso, Braque, Gris and others to experiment with ever more complex multiple views of the same subject.
  • Optic (II) Nerve

    • The optic nerve is also known as cranial nerve II.
    • The optic nerve is the second of twelve paired cranial nerves.
    • As a consequence, optic nerve damage produces irreversible blindness.
    • The optic nerve leaves the orbit, which is also known as an eye socket, via the optic canal, running posteromedially toward the optic chiasm, where there is a partial decussation (crossing) of fibers from the nasal visual fields of both eyes.
    • An illustration of the brain highlighting the optic nerve and optic tract.
  • Development of Vision

    • Development of the optic vesicles starts in the three week embryo from a progressively deepening groove in the neural plate called the optic sulcus.
    • As this expands, the rostral neuropore (the exit of the brain cavity out of the embryo) closes and the optic sulcus and the neural plate becomes the optic vesicle.
    • The lens acts as an inducer back to the optic vesicle to transform it into the optic cup and back to the epidermis to transform it into the cornea.
    • Iris is formed from the optic cup cells.
    • After the closure of the tube they are known as the optic vesicles.
  • Resolution of the Human Eye

    • As soon as the eye moves, it re-adjusts its exposure, both chemically and geometrically, by adjusting the iris (which regulates the size of the pupil).
    • The eye includes a lens not dissimilar to lenses found in optical instruments (such as cameras).
    • About 12–15° temporal and 1.5° below the horizontal is the optic nerve or blind spot which is roughly 7.5° high and 5.5° wide.
  • Geometric Sequences

    • A geometric progression, also known as a geometric sequence, is an ordered list of numbers in which each term after the first is found by multiplying the previous one by a fixed non-zero number called the common ratio $r$.
    • The $n$th term of a geometric sequence with initial value $a$ and common ratio $r$ is given by
    • The common ratio of a geometric series may be negative, resulting in an alternating sequence.
    • For instance: $1,-3,9,-27,81,-243, \cdots$ is a geometric sequence with common ratio $-3$.
    • The behavior of a geometric sequence depends on the value of the common ratio.
  • Experiments in Latin America

    • Beginning with Surrealism and Muralism after World War I, artistic styles evolved toward abstract expressionism, geometric designs, and social commentary through artwork.
    • The influx of postwar European artists to Latin America was another determinant factor in the rise of geometric abstraction.
    • The two groups differed about what constituted abstract art: the São Paulo contingent stressed reason, serial form, and optical effects; the neo-concrete artists of Rio de Janeiro accorded a higher value to the role of experimentation, expressiveness, and subjectivity.
  • Lasers

    • A laser consists of a gain medium, a mechanism to supply energy to it, and something to provide optical feedback.
    • A laser consists of a gain medium, a mechanism to supply energy to it, and something to provide optical feedback (usually an optical cavity).
    • When a gain medium is placed in an optical cavity, a laser can then produce a coherent beam of photons.
    • The gain medium is where the optical amplification process occurs.
    • The most common type of laser uses feedback from an optical cavity--a pair of highly reflective mirrors on either end of the gain medium.
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