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Ceiling lightA type of cloud-height indicator that uses a focused light to project vertically a narrow beam of light onto a cloud base.
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Ceiling lightAn instrument which projects a vertical light beam onto the base of a cloud or into surface-based obscuring phenomena; used at night in conjunction with a clinometer to determine the height of the clo [..]
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Ceiling lightAn instrument consisting of a drum and an optical system that projects a narrow vertical beam of light onto a cloud base.
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Ceiling lightAn instrument consisting of a drum and an optical system that projects a narrow vertical beam of light onto a cloud base.
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Ceiling lightAn instrument consisting of a drum and an optical system that projects a narrow vertical beam of light onto a cloud
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Ceiling lightAn instrument consisting of a drum and an optical system that projects a narrow vertical beam of light onto a cloud base.
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Ceiling light(Also called ceiling projector) A type of cloud-height indicator that uses a searchlight to project vertically a narrow beam of light onto a cloud base. The height of the cloud base is determined by u [..]
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