Celsius Celsius scale are defined by absolute zero and the triple point of Vienna Standard Mean Ocean Water (VSMOW), a specially purified water. This definition also precisely relates the Celsius scale to the Kelvin scale, which defines the SI base unit of thermodynamic temperature with symbol K. Absolute zero, the lowest temperature possible, is defined as being exactly 0 K and −273.15 °C. The temperature of the triple point of water is defined as exactly . This means that a temperature difference of one degree Celsius and that of one kelvin are exactly the same. In 1742, Swedish astronomer Anders Celsius
Celsius 41.11 and Robert Koehler of "Variety" said that the film preached to the choir. Some reviewers said that "Celsius 41.11" felt like a campaign ad for Bush or, possibly, an attack ad against Kerry. Michael Graham of the "National Review" praised "Celsius 41.11" saying that "unlike Michael Moore’s film, "Celsius 41.11" is an actual documentary" and that the film was "far more logical" than "Fahrenheit 9/11". However, Graham also added that "41.11 isn't nearly as emotionally powerful as Moore’s film", a view with which Duane Dudek of the "Milwaukee Journal Sentinel" concurred. Philip Kennicott of the "Washington Post" described Moore's film,