What are the upper and lower reference temperatures in Celsius and Fahrenheit sc

Question

What are the upper and lower reference temperatures in Celsius and Fahrenheit scales? How are they related? Is there any temperature that reads exactly same in both Celsius and Fahrenheit scales? What are the different processes of heat transfer through different materials? How is the temperature of an object connected to heat? Mention at least two ways heat and temperature may be correlated. What is the SI unit of temperature? How is that related to the Celsius scale? What is the unit of heat in metric system? How much amount of heat does it correspond to?

Explanation / Answer

1. The lower fixed point, or ice point, is the temperature of pure melting ice at normal atmospheric pressure. The upper fixed point, or steam point, is the temperature of pure boiling water at normal atmospheric pressure.

In Celsius scale -

Celsius scale of temperature was devised by a Swedish astronomer Anders Celsius (1701-1744). In this scale, the lower fixed point (the temperature of melting ice at normal atmospheric pressure) is taken as zero degree Celsius, written as 0°C. The upper fixed point (the temperature of pure boiling water at normal pressure of 76 cm of mercury) is considered to be hundred degree Celsius, written as 100°C. The interval between 0°C and 100°C is divided into hundred equal parts. Each part represents 1°C. This is a convenient scale of temperature, which is widely used.

In Fahrenheit scale -

This scale of temperature was devised by Gabriel Fahrenheit (1687-1736). The lower and upper fixed points in this scale are considered as 32°F and 212°F respectively. The interval of 180°F is divided into 180 equal parts. Each part is known as 1°F. This is widely used by doctors.

Relation between Celsius and Fahrenheit Scales -

100°C = 180°F

1°C = 180/100 = 9°/5 F

Similarly, 1°F = 100/180 = 5°/9 C

Yes, there is a temperature that reads exactly same in both Celsius and Fahrenheit Scales that is at - 40°.

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