Water and Wastewater Terms Beginning F
A B C D E F G H I J K L M N O P Q R S T U V W Y Z
focal length
The distance of a focus from the surface of a lens (such as a camera lens) to the focal point.
A B C D E F G H I J K L M N O P Q R S T U V W Y Z
The distance of a focus from the surface of a lens (such as a camera lens) to the focal point.
