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steradian

NOUN
  1. the unit of solid angle adopted under the Systeme International d'Unites

How To Use steradian In A Sentence

  • A sphere subtends 4 pi square radians (steradians) about the origin.
  • There are also two supplementary units, the radian, and the steradian.
  • 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. International System of Units (SI)
  • More formally, a candela is the intensity of a source that puts out yellow light at 1/683 watt per steradian of solid angle. BBC News - Home
  • This is the power of the light that is emitted per projected surface area into a given solid angle, and it is measured in watts per square metre per steradian.
  • There were some say that this “hole,” which is just a cold spot which has “sharp boundaries” in steradian measure from the surrounding. A Dark, Misleading Force
  • More formally, a candela is the intensity of a source that puts out yellow light at 1/683 watt per steradian of solid angle. BBC News - Home
  • k is ~5,000 particles per steradian per square meter per second Slashdot
  • 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. SpaceRef Top Stories
  • 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. Jonathan Wells: Another ID Creationist Who Doesn't Understand Information Theory - The Panda's Thumb
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