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* Normal human body temperature is 36.8 °C ±0.7 °C, or 98.2 °F ±1.3 °F. The commonly given value 98.6 °F is simply the exact conversion of the nineteenth-century German standard of 37 °C. Since it does not list an acceptable range, it could therefore be said to have excess (invalid) precision.
Phase behavior Triple point: 286.3 K (13.15 °C), ? Pa Critical point: 617 K (344 °C), 3500 kPa Std enthalpy change of fusion, Δ fus H o: 17.1 kJ/mol Std entropy change
On the other hand, a "normal" temperature may be a fever, if it is unusually high for that person; for example, medically frail elderly people have a decreased ability to generate body heat, so a "normal" temperature of 37.3 °C (99.1 °F) may represent a clinically significant fever. [37] [39]
Basal body temperature (BBT or BTP) is the lowest body temperature attained during rest (usually during sleep). It is usually estimated by a temperature measurement immediately after awakening and before any physical activity has been undertaken. This will lead to a somewhat higher value than the true BBT.
Low melting temperature allows repairing pewter and zinc objects, including die-cast toys. Sn 50 Pb 32 Cd 18: 145 [16] Cd, Pb: Cd18: Cd 82.5 Zn 17.5: 265 [27] Cd: Yes: Medium temperature alloy that provide strong, corrosion-resistant joints on most metals. [27] Also for soldering aluminium and die-cast zinc alloys. [28]
Satellite measurements of the surface temperature of Antarctica, taken between 1982 and 2013, found a coldest temperature of −93.2 °C (−136 °F) on 10 August 2010, at . Although this is not comparable to an air temperature, it is believed that the air temperature at this location would have been lower than the official record lowest air ...
The hottest month, July, has a normal mean temperature of 98.5 °F (36.9 °C). [16] On average, there are 119 days annually with a maximum of 100 °F (37.8 °C) or higher, 175 days with a maximum of 90 °F (32 °C) or higher, and 2.7 days with a minimum of 32 °F (0 °C) or lower. [ 17 ]
The daily normal low remains at or above 80 °F (27 °C) for an average of 74 days per summer. [113] On July 19, 2023, at the height of an unprecedent heatwave that caused daily highs to top 110 °F (43 °C) or higher that lasted for 31 days straight, Phoenix set its record for the warmest daily low temperature, at 97 °F (36 °C). [113]