What's the difference between sight and specular?

Sight


Definition:

  • (v. t.) The act of seeing; perception of objects by the eye; view; as, to gain sight of land.
  • (v. t.) The power of seeing; the faculty of vision, or of perceiving objects by the instrumentality of the eyes.
  • (v. t.) The state of admitting unobstructed vision; visibility; open view; region which the eye at one time surveys; space through which the power of vision extends; as, an object within sight.
  • (v. t.) A spectacle; a view; a show; something worth seeing.
  • (v. t.) The instrument of seeing; the eye.
  • (v. t.) Inspection; examination; as, a letter intended for the sight of only one person.
  • (v. t.) Mental view; opinion; judgment; as, in their sight it was harmless.
  • (v. t.) A small aperture through which objects are to be seen, and by which their direction is settled or ascertained; as, the sight of a quadrant.
  • (v. t.) A small piece of metal, fixed or movable, on the breech, muzzle, center, or trunnion of a gun, or on the breech and the muzzle of a rifle, pistol, etc., by means of which the eye is guided in aiming.
  • (v. t.) In a drawing, picture, etc., that part of the surface, as of paper or canvas, which is within the frame or the border or margin. In a frame or the like, the open space, the opening.
  • (v. t.) A great number, quantity, or sum; as, a sight of money.
  • (v. t.) To get sight of; to see; as, to sight land; to sight a wreck.
  • (v. t.) To look at through a sight; to see accurately; as, to sight an object, as a star.
  • (v. t.) To apply sights to; to adjust the sights of; also, to give the proper elevation and direction to by means of a sight; as, to sight a rifle or a cannon.
  • (v. i.) To take aim by a sight.

Example Sentences:

  • (1) In a new venture, BDJ Study Tours will offer a separate itinerary for partners on the Study Safari so whilst the business of dentistry gets under way they can explore additional sights in this fascinating country.
  • (2) Wimbledon said the world No1 Williams had been suffering from a viral illness and it was a sad and bizarre end to the American’s tournament, not to mention a worrying sight, seeing her hardly able to play.
  • (3) In the midst of all the newspaper headlines and vigils you can sometimes lose sight of the man who was on death row.
  • (4) Facebook Twitter Pinterest Imogen and her father, John Hull, before he lost his sight.
  • (5) Their physical condition and performance was found to be comparable with that of normal sighted children.
  • (6) "At first sight, today's announcement of an independent commissioner is a missed opportunity to strengthen our co-ordinated approach to addressing these very serious matters.
  • (7) He saw a soldier aim his weapon’s laser sight at the al-Atrashes’ Volkswagen “like he was preparing to shoot”.
  • (8) Many Iranian women are already pushing the boundaries , and observers in Tehran say women who drive with their headscarves resting on their shoulders are becoming a familiar sight.
  • (9) The home fans were lifted by the sight of Billy Bonds, a legend in these parts, being presented with a lifetime achievement award before the kick-off and the former West Ham captain and manager probably would have enjoyed playing in Allardyce's combative midfield.
  • (10) This results from a lack of knowledge of what could be done to conserve sight, the irreversible nature of many eye diseases, the distances involved in travelling to the clinic, and even a lack of knowledge of its existence.
  • (11) However, this operation may not be as sight effective as many believe.
  • (12) The results of excimer laser photorefractive keratectomy (PRK) in 16 blind and 120 sighted eyes (136 patients) are presented.
  • (13) It is now a well-known fact that the human body is able to use luminous stimulation for aims other than sight; the pineal gland, though no longer directly sensitive to light as in lower animals, is nevertheless the fulcrum of a complex neuro-endocrine system which makes an interaction between light and the human body possible by means of the production of a number of substances of which melatonin is the most widely investigated.
  • (14) Senior government sources have confirmed the budget razor gang has the fuel tax credit (formerly known as the diesel fuel rebate) “firmly in its sights” – a scheme that rebates miners and farmers and others for the off-road use of diesel.
  • (15) The National Society to Prevent Blindness, formed in 1908, is the oldest voluntary agency with the singular mission to preserve sight and prevent blindness through a broad program of public and professional education, industrial and community services, and research.
  • (16) Inside the Islamic State ‘capital’: no end in sight to its grim rule Read more The Kurdish People’s Protection Units (YPG) militia and an alliance of rebels known as the “Euphrates Volcano” – backed US-led coalition air strikes – have seized swaths of territory from Isis, including the strategic border town of Tal Abyad .
  • (17) When vertically divergent eye movements occur, both eyes also systematically rotate in parallel around their lines of sight (conjugate cyclotorsion).
  • (18) The Greek finance ministry's financial crimes unit conducted the raids, and says it has many other groups in its sights.
  • (19) The incumbent mayor has set his sights on stronger powers over the London economy as he seeks re-election for a second term on 3 May.
  • (20) The classical age-related problems of poor hearing, poor sight and difficulty in chewing were also prevalent among these elderly.

Specular


Definition:

  • (a.) Having the qualities of a speculum, or mirror; having a smooth, reflecting surface; as, a specular metal; a specular surface.
  • (a.) Of or pertaining to a speculum; conducted with the aid of a speculum; as, a specular examination.
  • (a.) Assisting sight, as a lens or the like.
  • (a.) Affording view.

Example Sentences:

  • (1) In a prospective study begun in March 1986, specular-microscopic endothelial cell photographs were taken in non-selected patients with primary, chronic, open-angle glaucoma who had not had intraocular surgery.
  • (2) This structure corresponds in distribution to the skin along the back of the fetus and likely represents a specular reflection from the skin surface.
  • (3) The effects of osmotic stress on corneal endothelium were investigated by exposing rabbit corneas to anisosmotic conditions, and then perfusing the corneas with isosmotic glutathione bicarbonate Ringer solution for 4 hr at 35 degrees C. During the perfusion, endothelial function was assessed by measuring corneal thickness with a specular microscope.
  • (4) Specular microscopic examination of the endothelium after the application of iodoacetamide showed progressive degradation of the integrity of the cellular structure; after 6 hr, there were no discernible cell borders.
  • (5) We developed an apparatus for automated morphometry of the corneal endothelium, which was photographed through a specular microscope connected to a video camera, and the images were stored on a video tape.
  • (6) Endothelial specular photography during an attack reveals dramatic changes: large black nonreflecting areas between quite normal-looking hexagonal cells.
  • (7) 1) In polishing the axial surface of the inner crown of the conic telescope crown system, the milling machine with a polishing disk facilitated specular finishing without causing undercutting in the region from the occlusal surface to the dental cervix.
  • (8) The specular photomicrographic characteristics were similar to those of fibroblast-like cells and foreign-body giant cells, which had been shown on the surfaces of extracted implanted intraocular lenses by the lens implant cytology technique.
  • (9) Excellent photographs of corneal endothelial cells may be obtained during clinical examinations with the specular microscope.
  • (10) Specular microscopy and computer-assisted morphometry was used to quantify central and peripheral endothelial cell density (ECD), coefficient of variation (COV) and the mean and standard deviation of the shape factor (S) over an 18-month period.
  • (11) We present applications to speckle reduction, detection of specular reflectors, attenuation estimation and ultrasound imaging.
  • (12) An off-specular peak, located at an angle of reflection considerably different from the angle of incidence, was observed to have an intensity comparable with that of the specular reflection peak.
  • (13) While some deep corneal opacities are easily diagnosed clinically, the nature of others may be difficult to determine and specular microscopy is a valuable aid in such cases.
  • (14) This synergistic combination did not alter donor human corneal morphology under specular microscopy, nor did it inhibit rabbit corneal endothelial cell division preserved and propagated in antifungal supplemented MK medium.
  • (15) In cases with pseudoprecipitates examination of the corneal endothelium with the specular microscope does not reveal any specific findings, only an edema of the corneal endothelium (so-called cornea pseudoguttata).
  • (16) An original system of grading of the corneal endothelial specular reflection, as assessed with a Haag-Streit 900 slit-lamp biomicroscope, has been shown to have a very highly significant relation to the endothelial cell density measured by contact specular photomicroscopy.
  • (17) Specular microscopy provides a level of magnification and differentiation of detail which approaches that of a histological examination, and has the advantage of being a noninvasive procedure.
  • (18) The resins characterized for Black patients had a higher degree of specular reflectance and were more opaque than resins for Caucasians.
  • (19) Endothelial repair was then studied using specular microscopy, histological staining, pachymetry, and autoradiographic analysis of the incorporation of tritiated thymidine into nuclear DNA.
  • (20) Observations were made with the aid of several microscopic techniques: light and specular microscopy, transmission and scanning electron microscopy.