What is the meaning of Fahrenheit and celsius?

Answer 1

Both are the names of scientists. They represent different scales of temperature. Fahrenheit has freezing of water or melting of ice to be at 32o and the boiling point of water to be at 212o. So the gap between these two fixed points will be 180.

But in Celsius scale early named as centigrade scale, freezing point will be taken to be at 0o and boiling point at 100o. So the gap will be having 100 equal divisions. So the equivalence of one division right from F to C will be 100/180 ie 5/9. So when we convert F into Celsius first we have to subtract 32 right from the F data then multiply by 5/9. It will be in C.

For example. -40o F.

First subtract 32 right from this. We get -72.

Now multiply by 5/9 we get -40

Vow, both F and C would coincide at -40o. Fantastic!

Now to convert C into F, first divide by 5/9 ie multiply by 9/5 and add 32 with that got.

Example: 15o C

Multiply by 9/5 we get 27.

Add 32 along with this we get 59o F.