Lesson KWL:

1) WHAT I KNOW
2) WHAT I WANT TO KNOW
3) WHAT I LEARNT

Lesson 2 (REFLECTION OF LIGHT)

	What i know	What I want to know	What i learnt
	When light strikes a flat mirror and is reflected off it, the angle of incidence is the same as the angle of reflection	Is there any more laws of reflection of light	The two kinds of reflections: -diffused -regular
	When a parallel beam of light falls on a smooth surface, the reflected rays are also parallel		how to use lasers to find out about the angle of reflection
	A Convex mirror is a reflecting surface in which its bulging side faces the source of light

Lasers and Photonics

What I know	What i want to know	What i learnt
Laser stands for Light amplification by stimulated emission of radiation and is a mechanism for emitting light	How is photonics used in applications	A photonics system consists of: -light source -medium -the deflecting system -the detecting system
Photonics is the technology that uses light, almost always from a laser.	Why are lasers uniquely hapaharzardous	the fours class of lasers with different power devices, dangers etc.
The science of Photonics include transmission, emission, signal processing, modulation etc.		lasers have three characteristics: 1)monochromatic 2)directional 3)coherent