SUPREME TAMIL: 29. TYPE OF TEMPERATURE SCALES.

TYPE OF TEMPERATURE SCALES and Celsius to Fahrenheit

( செல்சியஸ் to பாரன்ஹீட்)

There are Three temperature scales in use today,

1. Fahrenheit,

2. Celsius,

3. Kelvin.

The Fahrenheit Scale :-

The Fahrenheit temperature scale is based on 32 °F for the freezing point of water and 212 °F for the boiling point of water, with the interval between the two being divided into 180 parts.

The formula for converting a Celsius to Fahrenheit is: F=9/5C+32.

The Celsius Scale:-

The Celsius temperature scale is based on 0 °C for the freezing point and 100 °C for the boiling point of water, with the interval between the two being divided into 100 parts.

The formula for converting a Fahrenheit to Celsius is: C= (F–32) 5/9.

The Kelvin Scale:-

The solid, liquid, and gaseous phases of water can exist in equilibrium at 273.16 °C (the triple point temperature).

The kelvin is defined as 1 / 273.16 of the triple point temperature.

This makes one kelvin the same size as one Celsius degree.

On the Kelvin scale, 0 K represents absolute zero, the temperature at which the molecules of a substance have their lowest possible energy.

The formula for converting a Celsius to Kelvin is: K = C+273.

HISTORY OF THE Fahrenheit SCALE

It was developed by Daniel Gabriel Fahrenheit In 1714, a German-born scientist who lived and worked primarily in the Netherlands.

Only a few countries use Fahrenheit as their official scale: the United States, Belize, Palau, and the British Territories of the Bahamas and the Cayman Islands.

HISTORY OF THE CELSIUS SCALE

The scale now known as the Celsius scale was first proposed in the 18th century. In 1742, (Swedish scientist Anders Celsius) . All other countries use Celsius to measure temperature.

HISTORY OF THE KELVIN SCALE

In 1848, Kelvin used this as a basis for an absolute temperature scale. He defined "absolute" as the temperature at which molecules would stop moving, or "infinite cold." From absolute zero.

The Kelvin temperature scale was the brainchild of Belfast-born British inventor and scientist William Thomson — also known as Lord Kelvin.

Many physical laws and formulas can be expressed more simply by using the Kelvin scale.

Accordingly, the Kelvin scale has become the international standard for scientific temperature measurement.

Celsius to Fahrenheit

F = 9/5C+32

C = 30 ̊

F = 9/5 x 30 + 32

F = 54 + 32

Ans F = 86 ̊