Exhibit to show the effect of "blazing" a grating
Exhibit to show the effect of "blazing" a grating, comprising: (a) one replica reflecting grating on glass base 4" x 3" x 1/2", [P. 1027, Hy.10, approx, 3000 lines/ inch], (b) one "blazed" replica reflection grating on glass base 4" x 3" x 1/2", [P.1025, Cyl. 351A approx 3000 lines/inch], (c) glass block (4" x 3" x 1/2") front- aluminished to form plane mirror
