No. Proper nouns (names) use capital letters.
Celsius
Ice because water freezes at 0 degrees Celsius
Celsius and Fahrenheit
Celsius. Most of the world except the US uses celsius.
do you use a capital letter for the word knighted
Yes, it is correct to use a capital letter after the comma in "Dear Sir" as it is used as a salutation at the beginning of a letter or email.
The symbol for Celsius is °C.
no
A capital letter.
Most people Understand
A capital letter is to start a sentence or when you use a name or place. Lowercase is the smaller of the two types.
Metric. And it is Celsius (with a capital C) because it is named after Anders Celsius.
You can write "3 degrees Celsius" as "3°C" or "3° C." Both are accepted conventions for representing temperature in degrees Celsius.
no
Yes, "Celsius" is capitalized when referring to the temperature scale named after Anders Celsius.
Capital is letter in uppercase and everybody use it. In e-mail or chat however... only shouting people use it... *smile*