In this term, in physics we are studying the paragraph about reflection and refraction.

We would like to  start by talking about light. Light is part of the electromagnetic spectrum, which ranges from radio waves to gamma rays. Electromagnetic radiation waves, as their names suggest are fluctuations of electric and magnetic fields, which can transport energy from one location to another. Light and electromagnetic radiation can be reflected and refracted when passing through  another material.

 Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated and The Reflection is when the rays make an angle of incidence that is equal to the angle of reflection.

 We have learned that refraction occurs as light passes across the boundary between two media. Refraction is merely one of several possible boundary behaviours by which a light wave could behave when it encounters a new medium or an obstacle in its path. Snell rule says that n' multiplied by sin i = n" multiplied by sin r.

 

 

These are pictures that we took when we were performing  the experiment about reflection and refraction in our physics lab:

 

 

REFERENCE:

http://www.physicsclassroom.com/class/refrn/Lesson-1/The-Cause-of-Refraction

https://en.m.wikipedia.org/wiki/Reflection_(physics)

 

Gabriele B.          Niccolò M.