Medical Definition of Negative focal length

1. The focal length of a negative lens. Parallel rays impinging on a negative lens can be traced to a virtual focus which exists on the same side of the lens as the impinging rays. The distance from the second principal point of the lens to this second focal point is measured on the same side of the lens as is the object. See: negative lens, focal length. (05 Aug 1998)

Lexicographical Neighbors of Negative Focal Length

negative binomial distribution
negative charge
negative chemotaxis
negative control
negative convergence
negative cooperativity
negative correlation
negative crystal
negative electrode
negative electrotaxis
negative end-expiratory pressure
negative eyepiece
negative feedback
negative feedback
negative feedback circuit
negative focal length (current term)
negative G
negative identification
negative image
negative lens
negative magnetic pole
negative meniscus
negative muon
negative phase
negative pole
negative pressure
negative regulation
negative reinforcer
negative reinforcing stimulus
negative S

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