same size and shape
With thermometers
Thermometers may be calibrated in degrees Fahrenheit or degrees Celsius.
Celsius and Fahrenheit thermometers will read the same temperature at -40 degrees, as -40 degrees Celsius is equal to -40 degrees Fahrenheit.
Thermometers can be calibrated to measure temperature in Celsius, Fahrenheit, or Kelvin. Most common thermometers used for everyday purposes usually measure temperature in Celsius.
clinical thermometers measure temperature in Celsius.
At -40 degrees.
0 degrees
They measure temperature. In America, Fahrenheit, and in other parts of the world they measure in Celsius.
At a temperature of -40 (minus forty) degrees, the Celsius and Fahrenheit scales read the same number.
A thermometer is used to measure temperature in both Fahrenheit and Celsius scales. There are specific types of thermometers, such as digital thermometers with dual scales or conversion settings, that allow users to easily switch between Fahrenheit and Celsius readings.
-40c (apex)
negative 40 degrees