{'fraction_non_alphanumeric': 0.010869565217391304, 'fraction_numerical': 0.0, 'mean_word_length': 5.22972972972973, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
A new technique for measuring radius of curvature using half-aperture bidirectional shearing interferometer

A method for measuring the long radius of curvature with a modified half-aperture bidirectional shearing interferometer is described. A plane mirror of the interferometer is replaced by the test mirror and the incident beam is noncollimated by moving the point source of the collimating lens. This method can be applied to concave and convex surfaces.