SP-404 Skylab's Astronomy and Space Sciences

Figure 5-15. Photomicrograph of etched pits showing the path of ultraheavy cosmic rays. The three penetration depths correspond to cosmic rays with atomic numbers of approximately 75, 80, and 96, respectively, from left to right.

Figure 5-15. Photomicrograph of etched pits showing the path of ultraheavy cosmic rays. The three penetration depths correspond to cosmic rays with atomic numbers of approximately 75, 80, and 96, respectively, from left to right.

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