Meteorology known as the first "anemometer". In 1607, Galileo Galilei constructed a thermoscope. In 1611, Johannes Kepler wrote the first scientific treatise on snow crystals: "Strena Seu de Nive Sexangula (A New Year's Gift of Hexagonal Snow)". In 1643, Evangelista Torricelli invented the mercury barometer. In 1662, Sir Christopher Wren invented the mechanical, self-emptying, tipping bucket rain gauge. In 1714, Gabriel Fahrenheit created a reliable scale for measuring temperature with a mercury-type thermometer. In 1742, Anders Celsius, a Swedish astronomer, proposed the "centigrade" temperature scale, the predecessor of the current Celsius scale. In 1783, the first hair hygrometer was demonstrated by
Anders Behring Breivik she hired a lawyer to prevent Christensen from publishing the book. The book was nevertheless published in October 2013, and was widely criticized; on the basis of Wenche Behring Breivik's opposition to the book, for inclusion of material not relevant to understanding what motivated Anders Behring Breivik, and for character assassinations of still living people. Anders Behring Breivik Anders Behring Breivik (; since 2017 legally Fjotolf Hansen, also known by his pseudonym Andrew Berwick), born 13 February 1979, is a Norwegian far-right terrorist who committed the 2011 Norway attacks. On 22 July 2011, he killed eight people by detonating a