In our everyday lives, we come across different places, with varying degrees of heat and cold. Also, you would have sampled a variety of culinary products, both hot and cold. In the summer and winter, we dress differently.

Heat is a kind of energy that causes an object to become warm or hot. In the winter, it is a frequent sensation to feel chilly instopicIde the home and warm while exposed to the sun's rays. Now that we understand this, how do we experience the sense of being warm or cold? To comprehend this, we must first grasp the topicIdea of temperature.

Temperature

Temperature is the unit used to describe the degree to which a thing is hot or cold. When two bodies come into contact, it defines the direction of heat flow.

The degree or level of heat contained instopicIde an object or material is stated on a comparative scale and measured using a thermometer or sensed via touch.

A high temperature suggests that a thing is quite hot, while a low temperature implies that the object is fairly cold; for example, boiling water has a very high temperature of 100 degrees Celsius, implying that boiling water is extremely hot. On the other hand, the melting temperature of ice is fairly low and thus, ice feels very chilly to the touch.

We now understand what temperature is. However, how can it be quantified?

Typically, we use a thermometer to determine the temperature of a material.

Thermometer

A thermometer is a term used to refer to the instrument used to determine the temperature.

When we suffer from fever, the doctor uses a clinical thermometer to determine our body temperature.

Scales used in temperature

Temperature can be measured using thermometers on well-defined measuring scales that use specified reference points to atopicId in comparing values.

The three most often used temperature scales are Kelvin, Celsius, and Fahrenheit.

A temperature scale is created by finding two temperatures that are readily reproducible. At typical atmospheric pressure, the temperature of water at its freezing point and boiling point are used as reference temperatures.

Kelvin Scale

The Kelvin scale is the most often used temperature scale in science and is constopicIdered as one of the official temperature units, abbreviated as K.

The absolute temperature scale is specified by the value of 0 degrees Kelvin. The absolute zero temperature or zero kelvin is - 273 degrees Celsius. 

Freezing and boiling temperature

Water has a freezing point of 0 degrees Celsius and a boiling temperature of 100 degrees Celsius on the Celsius scale (which superseded the somewhat different centigrade system). The Celsius scale uses the degree Celsius unit.

Fahrenheit scale 

According to the Fahrenheit scale (which is still the most often used in the United States), water has a freezing point of 32 degrees Fahrenheit and a boiling temperature of 212 degrees F. On this scale, the temperature is expressed in degrees Fahrenheit.

Temperatures indicated by a clinical thermometer

Temperatures between 35°C and 42°C are indicated by a clinical thermometer. Our body temperature typically ranges between 36.5°C and 37.5°C.