Matches in DBpedia 2016-04 for { ?s ?p "A focal cloud is the collection of focal points of any imperfect lens, whether optical, electrostatic or electromagnetic. This includes parabolic antennas and lens-type reflective antennas of all kinds. The effect is analogous to the circle of confusion in photography.In this focal cloud illustration, a perfect reflector would focus all beams into the blue spot."@en }
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- Focal_cloud comment "A focal cloud is the collection of focal points of any imperfect lens, whether optical, electrostatic or electromagnetic. This includes parabolic antennas and lens-type reflective antennas of all kinds. The effect is analogous to the circle of confusion in photography.In this focal cloud illustration, a perfect reflector would focus all beams into the blue spot.".
- Q5463842 comment "A focal cloud is the collection of focal points of any imperfect lens, whether optical, electrostatic or electromagnetic. This includes parabolic antennas and lens-type reflective antennas of all kinds. The effect is analogous to the circle of confusion in photography.In this focal cloud illustration, a perfect reflector would focus all beams into the blue spot.".