Individual work part 1: Why does light reflect different in different materials?

In this chapter I will explain using partly my own thinking combined with several resources available the different reflection of light in different materials.

First hypothesis

I think the different bondings of the atoms/ions makes the interaction different. Atoms/ions all contain electrons,protons (and neutrons). So the different interactions should be related to the way these electrons,protons (and neutrons) are structured. 

I know how light is reflected by metal. The metal bond has the electrons flow through the metal, when light interacts with the electrons in the metal, these electrons start to "vibrate" (or flow) which creates an electricmagnetic field. This field bounch of the light in the direction it came from. The flatness of the surface determines the direction of the reflection.

What I need to know is:

What is the interaction of light with molecules?

The molecuuls have a different kind of bounds (covalent bonds) which do not have a free flow of electrons. This doesn't make it possible to create this (thick) electricmagnetic field and bounce of the light on the surface. The waves penetrate deeper in the material and on their way some of them are bounced of early and some are bounced of later. Other wavelenghts can be absorbed. So for example a white object reflects all the visible wavelenghts, but on a different level of molecuul layers. This makes a white car not the same as a mirror which also reflects the image.

In really flat surfaces you can see some reflection because a percentage of the light is reflected in the same direction forming a picture like a mirror. 

references:

MIT School of Engineering. 2014. Why doesn’t a plain, white piece of paper reflect light, but a mirror does? | MIT School of Engineering. [ONLINE] Available at: http://engineering.mit.edu/ask/why-doesn%E2%80%99t-plain-white-piece-paper-reflect-light-mirror-does. [Accessed 09 December 2014].

NCBI Bookshelf. 2014. Covalent Bonds - Molecular Cell Biology - NCBI Bookshelf. [ONLINE] Available at:http://www.ncbi.nlm.nih.gov/books/NBK21595/. [Accessed 09 December 2014].

Reflection of Light. 2014. Molecular Expressions Microscopy Primer: Light and Color - Reflection of Light. [ONLINE] Available at:http://micro.magnet.fsu.edu/primer/lightandcolor/reflectionintro.html. [Accessed 09 December 2014].

Individual work part 2: Summary Reflection and transmission – quatum Behaviour – Richard Feynmann

The lecture of Richard Feynmann is to explain the behaviour of photons by reflection and transmission according to quatum behaviour.