steradian in English

noun
1
the SI unit of solid angle, equal to the angle at the center of a sphere subtended by a part of the surface equal in area to the square of the radius.
A sphere subtends 4 pi square radians ( steradians ) about the origin.

Use "steradian" in a sentence

Below are sample sentences containing the word "steradian" from the English Dictionary. We can refer to these sentence patterns for sentences in case of finding sample sentences with the word "steradian", or refer to the context using the word "steradian" in the English Dictionary.

1. We assume you are converting between Candlepower and lumen/steradian

2. 1 candela is equal to 1 Candlepower, or 1 lumen/steradian.

3. One steradian is defined as the solid angle subtended by a cap area of A = r2.

4. In MKS units this would be W·m−2·sr−1·Hz−1 (watts per square-metre-steradian-hertz).

5. You can view more details on each measurement unit: Candlepower or lumen/steradian The SI base unit for luminous intensity is the candela

6. Candlepower, Lumens, & Footcandles The Illumination Engineering Society of North America (IESNA) defines Candlepower as luminous intensity expressed in lumens per steradian

7. Candela (cd), unit of luminous intensity in the International System of Units (SI), defined as the luminous intensity in a given direction of a source that emits monochromatic radiation of frequency 540 × 10 12 hertz and has a radiant intensity in that same direction of 1/683 watt per steradian (unit solid angle).

8. The device according to the present invention consists of a fixed structure, i.e. not rotating under the action of the wind, consisting of modules that can be assembled around the axis of the eolian rotor, each one consisting of a plurality of diaphragms (1) radially placed so as to lead all the aeriform mass, corresponding to the steradian (4) determined by the external entrance surface, onto the blades (3) of the central rotor along an inclined direction in the rotation direction of the turbine, without incidence onto the negative part.