different between planar vs collimated

English

Etymology

From Late Latin pl?n?rius (“relating to a plane”), derived from Latin pl?nus (“flat”, “level”), ultimately from Proto-Indo-European *pleh?- (“flat”).

Pronunciation

• (General American) IPA^(key): /?ple?n?/
• (Received Pronunciation) IPA^(key): /?ple?n?/
• Homophones: plainer, planer
• Rhymes: -e?n?(?)

Adjective

planar (comparative more planar, superlative most planar)

1. Of or pertaining to a plane.

   A planar projection of a three-dimensional object is its projection onto a plane.

2. Flat, two-dimensional.
3. (graph theory, of a graph) Able to be embedded in the plane with no edges intersecting.

   A complete graph with more than four nodes is never planar.

4. (transistor chip, semiconductor devices) Having a flat profile, not etched into a mesa.

Derived terms

• antiplanar
• nonplanar
• periplanar
• synplanar

Related terms

• plane
• planate

Translations

German

Pronunciation

• Rhymes: -a???

Adjective

planar (not comparable)

1. planar

Declension

Further reading

• “planar” in Duden online

Norwegian Nynorsk

Noun

planar m

1. indefinite plural of plan

Portuguese

Etymology

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)

Verb

planar (first-person singular present indicative plano, past participle planado)

1. (intransitive) to glide (to fly unpowered)

Conjugation

Related terms

• plano

Spanish

Etymology

From Late Latin planarius (“relating to a plane”), from Latin planum (“plane”).

Adjective

planar (plural planares)

1. planar (relating to a plane)

Swedish

Verb

planar

1. present tense of plana.

English

Verb

collimated

1. simple past tense and past participle of collimate

Adjective

collimated (comparative more collimated, superlative most collimated)

1. (physics, of a light beam) Composed of rays that are parallel, thus having a wavefront that is planar.
   • 1984, Charles J. Lada, Energetic Outflows, Winds and Jets around Young Stars, M. F. Kessler, J. P. Phillips (editors), Galactic and Extragalactic Infrared Spectroscopy, page 266,

     Low-mass objects have much more collimated flows than high mass sources.

   • 2008 May, A. M. Soderberg, et al., An extremely luminous X-ray outburst at the birth of a supernova, Accepted draft, page 3,

     Wolf-Rayet stars are also argued⁹ to give rise to gamma-ray bursts, a related but rare class of explosions characterized by highly-collimated relativistic jets.

   • 2011, R. Bachiller, M. Tafalla, Bipolar Molecular Outflows, Charles J. Lada, N.D. Kylafis (editors), The Origin of Stars and Planetary Systems, page 240,

     Although the most collimated outflows look very much jet-like at the highest velocities, their behavior is much more classical at lower speeds.

   • 2012, Kurt Demaagd, Anthony Oliver, Nathan Oostendorp, Katherine Scott, Practical Computer Vision with SimpleCV: The Simple Way to Make Technology See, page 222,

     Closing the aperture results in more collimated light, as only light traveling in the right direction can make it through the smaller opening.