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
Celsius (comics) combined with her natural thermal powers. Celsius (comics) Celsius is the superhero alias of Arani Desai, a fictional character in the DC Comics series, "Doom Patrol". She first appeared in "Showcase" #94 (September 1977), and was created by Paul Kupperberg and Joe Staton. She is among the very few superheroes of South Asian heritage, and may be the first ever such hero created by DC Comics. Celsius was created for the new, rebooted Doom Patrol which debuted in "Showcase" #94-96. Inspired by Len Wein and Dave Cockrum's "New X-Men", writer Paul Kupperberg wanted to have some heroes of different nationalities