Albedo planet would drop to about 0 °C. In contrast, if the entire Earth was covered by water — a so-called aquaplanet — the average temperature on the planet would rise to almost 27 °C. For land surfaces, it has been shown that the albedo at a particular solar zenith angle "θ" can be approximated by the proportionate sum of two terms: the directional-hemispherical reflectance at that solar zenith angle, formula_1, and the bi-hemispherical reflectance, formula_2, with formula_3 being the proportion of direct radiation from a given solar angle, and formula_4 being the proportion of diffuse illumination. Hence, the actual albedo
Albedo One "The Mammoth Encyclopedia of Science Fiction", notes that "Recent issues have boasted a printed cover, but the magazine still contains a black-and-white photocopied interior" and could "from the purely aesthetic point of view, benefit from some enhanced production values". The entry continues to note that "the editorial and literary quality of the contents more than makes up for this". However, Mann's inclusion of some genre magazines like "Albedo One" as opposed to other available magazines earned some criticism from reviewers, with one reviewer from the online edition of The Zone commenting that "Ireland's "Albedo One" rates a plug... But where