Search results
Results from the WOW.Com Content Network
* 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.
For example, the year cannot be divided into twelve 28-day months since 12 times 28 is 336, well short of 365. The lunar month (as defined by the moon's rotation) is not 28 days but 28.3 days. The year, defined in the Gregorian calendar as 365.2425 days has to be adjusted with leap days and leap seconds. Consequently, these units are now all ...
Unlike the degree Fahrenheit and degree Celsius, the kelvin is no longer referred to or written as a degree (but was before 1967 [1] [2] [3]). The kelvin is the primary unit of temperature measurement in the physical sciences, but is often used in conjunction with the degree Celsius, which has the same magnitude.
(The degree, in Celsius and measured relative to a base temperature, is identical to the kelvin, the SI base unit). Expressed as a proper SI unit, a quantity of kelvin second is four orders of magnitude higher than the corresponding degree day (1 Celsius degree-day is 8.64×10 4 K·s; 1 Fahrenheit degree-day is 4.8×10 4 K·s).
For an exact conversion between degrees Fahrenheit and Celsius, and kelvins of a specific temperature point, the following formulas can be applied. Here, f is the value in degrees Fahrenheit, c the value in degrees Celsius, and k the value in kelvins: f °F to c °C: c = f − 32 / 1.8 c °C to f °F: f = c × 1.8 + 32
For premium support please call: 800-290-4726 more ways to reach us
A shortcut method for degrees Celsius is to count the number of chirps in 8 seconds (N 8) and add 5 (this is fairly accurate between 5 and 30 °C): T C = 5 + N 8 {\displaystyle \,T_{C}=5+N_{8}} The above formulae are expressed in terms of integers to make them easier to remember—they are not intended to be exact.
The 273.15 K difference between K and °C is rounded to 273 K to avoid false precision in the Celsius value. E The 273.15 K difference between K and °C is within the precision of these values. F For a true black-body (which the plasma was not).