steradian_医学行业词汇 球面〔角〕度:立体角的测量单位,相当于球表面积对向球心的角度 steradian医学词典英英释义 noun a unit of measure of solid angles that is expressed as the solid angle subtended at the center of the sphere by a portion of the surface whose area is equal to the square of ...
Neither the radian nor steradian are SI base units. However, theyare coherent derived units in SI. There are two ways commonly used to represent this: ... The radian is officially defined (SI Brochure: , Section 2.2. Is radian a real unit? A radian is aunit of measurement for anglesdefi...
,Geometry. a solid angle at the center of a sphere subtending a section on the surface equal in area to the square of the radius of the sphere.:sr Discover More Word History and Origins Origin ofsteradian1 First recorded in1880–85;ste(reo)-+radian ...
A unit of measure equal to the solid angle subtended at the center of a sphere by an area on the surface of the sphere that is equal to the radius squared. The total solid angle of a sphere is 4π steradians. [ste(reo)-+radian.] ...
Neither the radian nor steradian are SI base units. However, they are coherent derived units in SI. There are two ways commonly used to represent this: ...
A steradian is also equal to the spherical area of a polygon having an angle excess of 1 radian, to 1/4π of a complete sphere, or to (180/π)² or 3282.80635 square degrees. The steradian was formerly anSI supplementary unit, but this category was abolished from theSIin 1995 and the...
H henry inductance Hz hertz cycle frequency J joule energy kat katal molar flow Im lumen luminous flux lx lux illuminance N newton force W ohm resistance Pa pascal pressure rad radian plane angle S siemens conductance sr steradian solid angle Sv sievert dose equivalent T tesla magnetic flux dens...
Until 1995, the SI classified the radian and the steradian as supplementary units, but this designation was abandoned and the units were grouped as derived units. Hingga 1995, SI mengelompokkan radian dan steradian sebagai unit tambahan, tetapi penunjukan ini ditinggalkan dan unit dikelompokkan...
Radians vs. Degrees Radian is the SI unit of angle. Convert between degrees and radians. Calculate angular velocity. SI System An introduction to the SI metric system.Search Search is the most efficient way to navigate the Engineering ToolBox. Popular internal searches in the Engineering ...
Steradian, unit of solid-angle measure in the International System of Units (SI), defined as the solid angle of a sphere subtended by a portion of the surface whose area is equal to the square of the sphere’s radius. Since the complete surface area of a