Find the word definition

Crossword clues for optics

Longman Dictionary of Contemporary English
fibre optics
▪ fibre optic cables
▪ To head off competition, the telcos have invested heavily in fiber optics and sophisticated switching technology.
▪ But fiber optics may change all that.
▪ It was into bioengineering, lasers, fiber optics.
▪ Internet connections expanding by 15 percent a month. Fiber optics transmitting 40 billion bits of data per second.
▪ The advent of fiber optics in the early 1980s, however, changed the role of satellites in the global communications industry.
▪ Measuring current with light Another area of activity for King's is in fibre optics.
▪ DONs can be a fast way of establishing links between major conurbations, often by means of fibre optics.
▪ The DoI runs a mass of schemes to support research in particular areas, ranging from robots to fibre optics.
▪ About 25 percent of these are New Economy companies, with only five involved directly in optics.
▪ All the substrates and optics for Mr Urvill's telescope were made here.
▪ But fiber optics may change all that.
▪ Currently, there are more than 4,500 optics workers at Tucson's 136 optic firms.
▪ Heat had intimate links with chemistry, and optics with astronomy.
▪ His optics are internationally recognised to be of the highest quality.
▪ It was into bioengineering, lasers, fiber optics.
▪ When we calculate the uncertainty in position, Ax, we use formulae for resolving power which are derived from wave optics.
The Collaborative International Dictionary

Optics \Op"tics\, n. [Cf. F. optique, L. optice, Gr. ? (sc. ?). See Optic.] That branch of physical science which treats of the nature and properties of light, the laws of its modification by opaque and transparent bodies, and the phenomena of vision.

Douglas Harper's Etymology Dictionary

"science of sight and light," 1570s, from optic; also see -ics. Used for Medieval Latin optica (neuter plural), from Greek ta optika "optical matters," neuter plural of optikos "optic."


n. 1 (label en physics) The physics of light and vision. 2 The light-related aspects of a device.


n. the branch of physics that studies the physical properties of light


Optics is the branch of physics which involves the behaviour and properties of light, including its interactions with matter and the construction of instruments that use or detect it. Optics usually describes the behaviour of visible, ultraviolet, and infrared light. Because light is an electromagnetic wave, other forms of electromagnetic radiation such as X-rays, microwaves, and radio waves exhibit similar properties.

Most optical phenomena can be accounted for using the classical electromagnetic description of light. Complete electromagnetic descriptions of light are, however, often difficult to apply in practice. Practical optics is usually done using simplified models. The most common of these, geometric optics, treats light as a collection of rays that travel in straight lines and bend when they pass through or reflect from surfaces. Physical optics is a more comprehensive model of light, which includes wave effects such as diffraction and interference that cannot be accounted for in geometric optics. Historically, the ray-based model of light was developed first, followed by the wave model of light. Progress in electromagnetic theory in the 19th century led to the discovery that light waves were in fact electromagnetic radiation.

Some phenomena depend on the fact that light has both wave-like and particle-like properties. Explanation of these effects requires quantum mechanics. When considering light's particle-like properties, the light is modelled as a collection of particles called " photons". Quantum optics deals with the application of quantum mechanics to optical systems.

Optical science is relevant to and studied in many related disciplines including astronomy, various engineering fields, photography, and medicine (particularly ophthalmology and optometry). Practical applications of optics are found in a variety of technologies and everyday objects, including mirrors, lenses, telescopes, microscopes, lasers, and fibre optics.

Optics (album)

Optics is the second album of the Illinois-based industrial band, I:Scintilla. It was released with two versions, a single disc version and a limited edition two disc version containing remixes.

Usage examples of "optics".

She chose breath over sight and grabbed the aerator, quenching her agonized lungs even as the high-tech optics were torn off her head, turning everything black.

Only the third now stared directly at the indefatigably advancing Drounge, peering into its seeping, pustulant optics, plainly sensible not only of its presence but of its bearing and appearance.

From military optics to annular optics to entrepreneurial optics to tennis-pedagogy to film.