For Black & White Wednesday: Books...
One of these is called High Performance Stiffened Structures; 1999 (Institute of Mechanical Engineers) :-)) There is also a very old (1950s) Encyclopaedia Britannica vol 10!
Strobist; Set on a white cloth with two brollies high left and right at 180 degrees. a1 white card for bounce under camera. SB700 and YN560 triggered with rf 603s.