Solid Angle

Definition: Solid Angle

Solid Angle

Noun

1. An angle formed by three or more planes intersecting at a common point (the vertex).

Specialty Definition: Solid Angle

Domain	Definition
Aerospace	A portion of the whole of space about a given point, bounded by a conical surface with its vertex at that point and measured by the area cut by the bounding surface from the surface of a sphere of unit radius centered at that point. See steradian.Symbol ?. (references)
Source: compiled by the editor from various references; see credits.

Specialty Definition: Solid angle

A solid angle is the three dimensional analog of the ordinary angle. Instead of two lines meeting at a vertex, though, one needs a three dimensional figure that meets at a point. Good examples of objects that do this are a cone or a pyramid. To find the solid angle that the object covers, imagine a sphere centered at the point of the object. Now, take the surface area of the part of the sphere that is contained within the object, and divide that by the total area of the sphere.

Solid angle is measured in either radians² or degrees². To obtain the solid angle in radians squared, multiply the fractional area by 4&pi. To obtain the solid angle in degrees squared, multiply the fractional area by 4 x 180²/π which is equal to 129600/π. The SI unit of solid angle is the steradian (symbol sr), which is equal to radian².

Solid angle is useful for...

defining luminosity

Expression: Solid Angle

Modern Translation: Solid Angle

Language		Translations for "solid angle"; alternative meanings/domain in parentheses.
Bulgarian		пространствен ъгъл. (various references)

Greek		στέρεα γωνία. (various references)

Hungarian		testszög. (various references)

Pig Latin		olidsay angleay

Romanian		unghi poliedric. (various references)

Russian		пространственный угол. (various references)
Source: compiled by the editor from various translation references.

Anagrams: Solid Angle

Scrabble® Enable2K-Verified Anagrams
	Words within the letters "a-d-e-g-i-l-l-n-o-s"
	-1 letter: alongside, signalled.
	-2 letters: agonised, allonges, dealings, diagnose, galleins, galleons, gasoline, leadings, loadings, sidelong, signaled.
	-3 letters: agonies, agonise, ainsell, aligned, allonge, anisole, dallies, dangles, dealing, denials, dialogs, dingles, dingoes, dollies, dolling, dongles, eloigns, engilds, gallein, galleon, gallied, gallies, gallons, ganoids, geoidal, glandes, glenoid, goalies, indoles, isolead, ladings, ladinos, ladling, lagends, leading, leasing, legions, ligands.
	Words containing the letters "a-d-e-g-i-l-l-n-o-s"
	+2 letters: desolatingly, slaveholding.
	+3 letters: slaveholdings.
	+5 letters: dinoflagellates.
Source: compiled by the editor from various references; see credits. SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro.

Alternative Orthography: Solid Angle

Hexadecimal (or equivalents, 770AD-1900s) (references)

53 6F 6C 69 64 41 6E 67 6C 65

Leonardo da Vinci (1452-1519; backwards) (references)

Binary Code (1918-1938, probably earlier) (references)

01010011 01101111 01101100 01101001 01100100 00100000 01000001 01101110 01100111 01101100 01100101

HTML Code (1990) (references)

&#83 &#111 &#108 &#105 &#100 &#32 &#65 &#110 &#103 &#108 &#101

ISO 10646 (1991-1993) (references)

0053 006F 006C 0069 0064 0041 006E 0067 006C 0065

Encryption (beginner's substitution cypher): (references)

Solid Angle

Definition: Solid Angle

Solid Angle

Noun

Specialty Definition: Solid Angle

Aerospace

Specialty Definition: Solid angle

Crosswords: Solid Angle

Expression: Solid Angle

Modern Translation: Solid Angle

Bulgarian

Greek

Hungarian

Pig Latin

Romanian

Russian

Anagrams: Solid Angle

Scrabble® Enable2K-Verified Anagrams

Alternative Orthography: Solid Angle

53 6F 6C 69 64 41 6E 67 6C 65

01010011 01101111 01101100 01101001 01100100 00100000 01000001 01101110 01100111 01101100 01100101

&#83 &#111 &#108 &#105 &#100 &#32 &#65 &#110 &#103 &#108 &#101

0053 006F 006C 0069 0064 0041 006E 0067 006C 0065

538178757023580737871

INDEX

Expression using "solid angle": edges or a solid angle. Additional references.
Source: compiled by the editor from various references; see credits.