Every month in this stunning 12-month wall calendar shows a big beautiful photograph of a featured element and gives information and interesting anecdotes about the history and use of the element. Featured elements in the 2017 calendar include cesium (55), sulfur (16), iron (26), oxygen (8), scandium (21), yttrium (39), germanium (32), gold (79), technetium (43), lanthanum (57), tungsten (74), and ruthenium (44). Smaller images of compounds are featured within the monthly grid and show the element's every-day use. Monthly grids include important dates in chemical history, as well as major North American, British, Australian and New Zealand holidays. As well as the monthly phases of the moon.
Theodore Gray is the author of 'The Elements' and 'Mad Science: Experiments You Can Do at Home-But Probably Shouldn't', and of Popular Science magazine's 'Gray Matter' column. He is the proprietor of periodictable.com and the creator of the iconic photographic periodic table poster seen in universities, schools, museums, and on TV shows from 'MythBusters' to 'Hannah Montana'. In his other life, he is co-founder of the software company Wolfram Research, creators of the world's leading technical software system, Mathematica®, and WolframlAlphaTM. He lives in Champaign-Urbana, Illinois.