Examlex
A movie projector is equipped with a 0.5-meter focal length lens that is positioned 0.506 meters from the film.
(a)How far from the lens must the screen be if the image on it is to be in focus?
(b)How many times larger is the image than the object?
(c)Is the image produced a real or a virtual image?
Partial Color Blindness
A condition where an individual has difficulty distinguishing between certain colors, as opposed to complete inability.
Protanopia
A type of color blindness characterized by the inability to distinguish between colors within the green-red spectrum due to the absence of red photoreceptors in the eyes.
Pulse Oximetry
Measuring the oxygen saturation of arterial blood in a subject by utilizing a sensor attached typically to a finger, toe, or ear to determine the percentage of oxyhemoglobin in blood pulsating through a network of capillaries and that typically sounds an alarm if the blood saturation becomes less than optimal.
Oxygen Saturation
The percentage of hemoglobin binding sites in the bloodstream occupied by oxygen, an important indicator of respiratory function.
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