In mathematics, the logarithm with the base of 2 (log2n), also known as binary logarithm, is to obtain the exponent that n must be raised to the power of 2.
That is, for any real number x,
For example: log2 1 = 0，log2 2 = 1，log2 4 = 2，log2 8 = 3, log2 16 = 4, log2 32 = 5
The Celsius temperature scale is a temperature scale commonly used in the world, with the symbol °C, which belongs to the metric system.
The Celsius scale stipulates that at standard atmospheric pressure, the freezing point of pure water (that is, the temperature at which solid and liquid coexist) is 0°C, the boiling point of water is 100°C, and the middle is divided into 100 equal parts, each equal to 1°C.
The Fahrenheit scale is a temperature scale with the symbol °F. The Fahrenheit scale is defined as: At standard atmospheric pressure, the melting point of ice is 32°F and the boiling point of water is 212°F, divided into 180 equal parts, each equal to 1 degree Fahrenheit.
The conversion formula for two temperature scales in Celsius and Fahrenheit (°C or °F) is:
