# Opinion articles

Does college education serve any purpose? [pdf]

# Accessible literature for students

## The amazing normal forces

Where do normal forces come from?!

Read here: http://arxiv.org/abs/1211.5175

## Definitions of sine and cosine functions, circular motion

How do we define sine and cosine? Are these definitions equivalent?

Read more here: http://arxiv.org/abs/1110.6106 and here: http://arxiv.org/abs/1111.6839

## Extensions of real numbers using coset groups

Are there numbers that are more complex than complex numbers?! How to find them?

Read here: http://arxiv.org/abs/1212.1850