TEMPRATURE

• MATHAMATICS
• Secondary Education

TEMPERATURE 

WHAT COMES TO YOUR
MIND WHEN YOU
THINK ABOUT TEMPRATURE

WHAT IS TEMPRATURE 

Temperature, measure of hotness or coldness expressed in terms of any of several arbitrary scales and indicating the direction in which heat energy will spontaneously flow—i.e., from a hotter body (one at a higher temperature) to a colder body (one at a lower temperature).

WHICH TOOL YOU USE TO MEASURE TEMPRATURE

1. WEIGHING MACHINE
2. THERMOMETER
3. SUN DIAL
4. SAND CLOCK

The TEMPRATURE scales

Three types of temprature scales-

Kelvin

Celsius

Farenheit

Celsius 

Celsius, also called centigrade, scale based on 0° for the freezing point of water and 100° for the boiling point of water. Invented in 1742 by the Swedish astronomer Anders Celsius, it is sometimes called the centigrade scale because of the 100-degree interval between the defined points.

Kelvin Scale

Kelvin (K), base unit of thermodynamic temperature measurement in the International System of Units (SI). ... The difference between the freezing and boiling points of water is 100 degrees in both the Kelvin and Celsius scales; thus, the Kelvin degree has the same magnitude as the Celsius degree.

SI UNIT OF TEMPRATURE

1. CELSIUS
2. KEALVEN
3. KELVIN

TYPES OF THERMAMETER

THERE ARE 2 TYPES OF THERMOMETER

1. LABORATORY THERMOMETER

2. CLINICAL THERMOMETER

CAN YOU TELL WHAT DO WE MEAN BY CLINICAL THERMOMETER

CLINICAL THERMOMETER

Clinical thermometers are meant for clinical purposes. It is developed for measuring the human body temperature. It is a long narrow glass tube with a bulb containing mercury at the end. The normal human body temperature is 37˚C; which can fluctuate between the ranges 35˚C to 42˚C. Hence, the clinical thermometers have the range 35˚C to 42˚C. The level of mercury tells our body temperature in ˚C. Since mercury is a toxic element, thus these thermometers have been replaced by digital thermometers nowadays.

LABORATORY THERMOMETER

Since clinical thermometers can’t be used to measure temperature other than the human body, we need a special type of thermometers for other purposes. A laboratory thermometer, which is colloquially known as the lab thermometer, is used for measuring temperatures other than the human body temperature. It ranges from -10˚C to 110˚C. Laboratory thermometers are designed for lab purposes such as checking boiling point, freezing point, or temperature of other substances. You can use a laboratory thermometer for checking the temperature of a solvent but not a clinical one.

HOW WAS THIS LESSON?

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