Light!

Today we entered the world of light and reflection. B, C and E Blocks discussed the properties of light as an electromagnetic wave (though we did give a nod to the particle nature of light), took a brief look at Huygen's principle and trod over old ground with the concept of intensity. Tomorrow, E Block will work on their light intensity and polarization lab (F Block's activity today) and B and C will push on to reflection.

F Block conducted two lab investigations - one on light intensity and the other on polarization. For light intensity, the inverse-square relationship between intensity and distance from the source was pretty clearly demonstrated and matched what we would predict from our work with sound intensity. The polarization lab let folks work with polarizing filters to see how they function and a polarizing sunglass lens was tested to see if it followed the basic pattern as the filters (it did). Tomorrow, we take up the concepts of properties of light, Huygen's principle and review the math behind light intensity.