The weather icon on the iphone4 desktop shows 73. What does this mean?

Here 73 refers to the temperature in Fahrenheit. It is converted into degrees Celsius (℃) as follows: Conversion formula between degrees Celsius and degrees Fahrenheit.

f =(c×9/5)+32； c =(F-32)×5/9； Among them, F degrees Fahrenheit and C degrees Celsius are obviously 73 degrees Fahrenheit, which are translated into 22.7777 degrees Celsius and rounded to 23 degrees Celsius.

Conversion formula between celsius temperature and kelvin temperature (absolute temperature)

k = C+273. 16； Where k kelvin temperature and celsius temperature.

Conversion formula between Fahrenheit temperature and Rankine temperature scale

r = F+495.69； Where r-Rankine scale and f-Fahrenheit temperature.