Self-contained breathing apparatus pressure changes with ambient temperature. As temperature decreases, the pressure inside the cylinder decreases. The relationship between the temperature and the pressure of a gas is defined by the formula "PV" = "nRT". (See Universal gas constant.) What is particularly important to understand from the formula is that the temperature is in kelvins, not degrees Fahrenheit. Consider the freezing point of water at 32 °F (0 °C, 273.15 K) and compare it to 96 °F (35.6 °C or 308.71 K; normal human body temperature is 37 °C). While 96 is arithmetically three times 32, the difference in temperature from a
Centigrade (film) originally to go to another actor, but difficulties forced Cunningham to take the part himself. The script was written 17 years ago; Madison Graie suggested to Cunningham that they apply for the Directors Guild of Canada's "Kickstart Program" to make "Fahrenheit" ("Centigrade"'s original title). The pair won one of the five Kickstart awards and used the $20,000 CAD prize to make the film. Due to signing with Shorts International, "Centigrade" will be available on iTunes, the first Canadian live action short to appear there. Cunningham and Graie are working on turning "Centigrade" into a feature film. "Centigrade"'s Award for Best