steradian
IPA: stɛrˈeɪdiʌn
noun
- (geometry) In the International System of Units, the derived unit of solid angle; the solid angle subtended at the centre of a sphere of radius r by a portion of the surface of the sphere that has area r². Symbol: sr
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Examples of "steradian" in Sentences
- Lumens per steradian and all than.
- A steradian can also be called a squared radian.
- A steradian can also be called a 'squared radian'.
- A steradian can also be called a squared radian' .
- The instrument had a field of view of one steradian.
- The SI unit of solid angle measurement is the steradian.
- k is ~5,000 particles per steradian per square meter per second
- The numerical values of the solid angles are given in steradians.
- A complete steradian sweep showed nothing the size of a spaceship out there.
- (c) In photometry, the unit name steradian and the unit symbol sr are usually retained in expressions for derived units.
- More formally, a candela is the intensity of a source that puts out yellow light at 1/683 watt per steradian of solid angle.
- Flying by the seat of one’s pants, 4-pi steradian shots in the dark, gut checks and the like are all risky in foreign territory.
- There were some say that this “hole,” which is just a cold spot which has “sharp boundaries” in steradian measure from the surrounding.
- My follicular kingman homes for sale drowse fractiousness me this scrum to lender inauspiciously his defenseless panicle, his disorganisation to curb, and his steradian for noncausative to mustache.
- Unit of luminous intensity candela The candela is the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540 x 1012 hertz and that has a radiant intensity in that direction of 1/683 watt per steradian.
- An advantage of the moon over the Earth is that the moon subtends less than 0.25 square degree, whereas the Earth subtends a steradian or more, so scattered light and light potentially leaking around the shutter presents additional problems for the Earth.