Entry #2

Physics Journal 2

Prefixes
Scientific Notation

Prefixes
What is a prefix?
Say, the base quantity is meter.
A common prefix for this unit is centi.
Put them together and you get centimeter.
In other words, centi is the prefix for the base quantity meter.


Table of common prefixes 

Scientific notation


The standard form of Scientific notation: Nx10e (Ten to the power of e, cause idk how to make the e small ><) 
N Being a number between 1 and 10
e Being the Index/exponent that can vary.


e.g.
Express 4660.0 in scientific notation.
To make it a number between 1 and 10, we move the decimal place (d.p.) to the left.
Therefore 4660.0 becomes 4.66. Since the d.p. has been moved by 3 places, 4660.0's index notation should be written this way: 4.66 X 103 (10 to the power of 3. )


Thoughts: I find this rather straight forward but without regular revision, it is easy to forget the rules on how to get the Scientific notation. :)