| Raman effect |
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noun - (physics) the inelastic scattering of photons with subsequent change in frequency and phase; employed in Raman spectroscopy
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| real |
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noun
- A commodity; see reality.
- (grammar) One of the three genders that the common gender can be separated into in the Scandinavian languages.
adjective (er, more)
- That can be characterized as a confirmation of truth.
- That has physical existence.
- No one has ever seen a real unicorn because they don't exist.
- (economics) Having been adjusted to remove the effects of inflation; contrasted with nominal.
- real consumption
- real GNP
- (economics) Relating to the result of the actions of rational agents; relating to neoclassical economic models as opposed to Keynesian models.
- (mathematics) Relating to numbers with a one-to-one correspondence to the points on a line.
- Relating to immovable tangible property.
- real estate
- real property
- That is an exemplary or pungent instance of a class or type.
- a real problem
- a real hero
- Genuine, not faked.
- real tears
- Genuine, not artificial.
- real leather
- (slang) Signifying meritorious qualities or actions especially in regards to enjoying life, prowess at sports and success wooing potential partners.
- keeping it real
adverb
- (colloquial) really.
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| reflect |
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verb
- (transitive) To bend back (light etc) from a surface.
- A mirror reflects the light that shines on it.
- (transitive) To mirror, or show the image of something.
- The shop window reflected his image as he walked past.
- (transitive) To bring as a consequence.
- The team's victory reflects the Captain's abilities.
- (intransitive) To be bent back.
- The laser light was reflected from the spaceman's visor.
- (intransitive) To give evidence of someone's or something's character etc.
- The teacher's ability reflects well on the school.
- (intransitive) To think seriously; to ponder or consider.
- People do that sort of thing every day, without ever stopping to on the consequences.
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| reflectometer |
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noun
- an instrument used to measure the reflectance of a surface
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| reflector |
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noun
- Something which reflects heat, light or sound, especially something having a reflecting surface.
- A reflecting telescope.
- A small, often red, reflecting disk on the rear of a vehicle that reflects the headlights of other vehicles.
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| refract |
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verb
- (context, intransitive, of light) To change direction as a result of entering a different medium
- (transitive) To cause (light) to change direction as a result of entering a diffrent medium.
- A prism can light.
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| refractive index |
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noun - (physics) the ratio of the speed of light in air or vacuum to that in another medium
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| refractometer |
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noun - (physics) An optical instrument used to measure the refractive index of a substance
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| resolution |
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noun
- The state of being resolute.
- His stalwart resolution is perhaps admirable, perhaps foolish.
- A statement of intent, a vow (often New Year's resolution).
- My resolution is to cut back on the fast food this year.
- The act of discerning detail.
- (computing) The degree of fineness with which an image can be recorded or produced, often expressed as the number of pixels per unit of length (typically an inch).
- Printing at higher resolution will cause a reduction in performance.
- (context, computer hardware) The number of pixels in an image that are stored or displayed.
- This monitor's maximum resolution is 800x600.
- A formal statement adopted by an assembly.
- (science) The separation of the constituent parts (of a spectrum etc).
- (science) The degree of fineness of such a separation.
- (music) Progression from dissonance to consonance; a chord to which such progression is made.
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| resolving power |
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noun
- a quantitative measure of the ability of an optical instrument to produce separable images
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| reticle |
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noun
- (obsolete) a small net
- a gridwork or lattice of lines set into the eyepiece of optical instruments to help with measurements or observation
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| reticule |
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noun - A reticle; a grid, network, or crosshatch, especially as found in the eyepiece of various optical instruments to aid measurement or alignment.
- A small women's bag made of a woven net-like material.
- 2006, Thomas Pynchon, Against the Day, Vintage 2007, p. 606:
- :Pléiade ... lingered through another bottle of wine before producing from her a Vacheron & Constantin watch
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