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Diagram showing the relationship between the zenith, the nadir, and different types of horizon.Note that the zenith is opposite the nadir. The nadir [a] [b] is the direction pointing directly below a particular location; that is, it is one of two vertical directions at a specified location, orthogonal to a horizontal flat surface.
[clarification needed] It is the point on the aerial photo platform that directly falls on a line half-way between the Principal point and the Nadir point. In imaging physics and radiation oncology, the isocenter is termed as the point in space through which the central rays of the radiation beams pass.
Forms terms denoting conditions relating to eating or ingestion Greek φαγία (phagía) eating < φᾰγεῖν (phageîn), to eat Sarcophagia-phago-eating, devouring Greek -φᾰ́γος (-phágos), eater of, eating phagocyte: phagist-Forms nouns that denote a person who 'feeds on' the first element or part of the word
The term zenith sometimes means the highest point, way, or level reached by a celestial body on its daily apparent path around a given point of observation. [5] This sense of the word is often used to describe the position of the Sun ("The sun reached its zenith..."), but to an astronomer, the Sun does not have its own zenith and is at the ...
1 point if the fall is 30–50% or the nadir is 10–19 × 10 9 /liter No points if the fall is less than 30% or the nadir is <10 × 10 9 /liter. Timing 2 points if the fall is between days 5–10 after commencement of treatment 1 point if the fall is after day 10.
In medical disciplines, all references to a location on or in the body are made based upon the standard anatomical position. A straight position is assumed when describing a proximo-distal axis (towards or away from a point of attachment). This helps avoid confusion in terminology when referring to the same organism in different postures.
Family medical history FOH: Family ocular history F/U: Follow up appointment GH: General health G(M)P: General (medical) practitioner HA: Headaches HARC: Harmonious abnormal retinal correspondence HM: Hand motion vision – state distance Hx: History IOL: Intra-ocular lens IOP: Intra-ocular pressure ISNT: Inferior, Superior, Nasal, Temporal
In topography, a nadir is a point on a surface that is lower in elevation than all points immediately adjacent to it. [1] Mathematically , a nadir is a local minimum of elevation. A nadir may be the lowest point of a dry basin or depression , or the deepest point of a body of water or ice .