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James Joseph Brown was born on May 3, 1933, in Barnwell, South Carolina, to 16-year-old Susie (née Behling; 1917–2004) and 21-year-old Joseph Gardner Brown (1912–1993) in a small wooden shack. [16]
On top is a depiction of a perfect lens without spherical aberration: all incoming rays are focused in the focal point. The bottom example depicts a real lens with spherical surfaces, which produces spherical aberration: The different rays do not meet after the lens in one focal point.
The light gun appears to owe a number of its features to the 25-pounder gun, unsurprisingly since RARDE was the successor to the design department, Woolwich Arsenal. Among these features are its vertically sliding block breech, and a box trail instead of a split trail ; a traversing platform is normally used with it.