{'fraction_non_alphanumeric': 0.01855287569573284, 'fraction_numerical': 0.016697588126159554, 'mean_word_length': 4.806451612903226, '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}}
Emission of Radiation from the Earth 29dec12

Figure 1 shows an infra-red spectrum gathered by a satellite looking down towards the Earth from around 20km. This spectrum shows the intensity of emission plotted against frequency (wavenumber). The energy depicted is mostly radiated from the surface of the Earth, which is almost a perfect blackbody and radiates radio waves in the infra-red frequency band. The imperfections in the shape of the spectrum are caused by the 20km of atmosphere through which the infra-red waves have travelled.