3 1 4 D O C U M E N T 2 9 6 M A Y 1 9 2 6 b) grating with distance " " 0.01 cm diaphragm " " 2 mm the same " " " 4 mm effect diaphragm " " 6 mm c) grating with distance " " 0.05 mm diaphragm of " " 2 mm: light is too faint for reliable observation " " " 4 mm: " " " 6 mm: [4] unreliable } [4] [4]
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