Figure 7
Series of scattering patterns of a porcupine quill section, recorded with the beam perpendicular to the quill axis (vertical), along the scan line represented in Fig. 6. From left to right and then top to bottom, the positions starting from the outer face of the quill to the inner face correspond to the following depths in micrometres: 5, 15, 30, 60, 90, 120, 150, 185, 220, 225, 285, 320, 350, 380, 410, 440, 470, 500, 530 and 535. The intensity grey scale is logarithmic. |