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 by Tachyon Productions and was in an A5 size format. From issue 13, 1996, the magazine moved to a larger A4 format and was published by Albedo One Productions. The move to new publisher and format was motivated, according to the editors, "in an effort to gain better distribution, more advertising and put a little jizz into the magazine.". "Albedo One" currently publishes original (i.e. previously unpublished) stories from Irish, European and International authors. Its focus on Irish authors has often been noted by reviewers, but publication of non-Irish authors is not excluded as with some national genre magazines, and