© 2002 J.Paul
Robinson, Purdue University BMS 631- Flow Cytometry lecture002.ppt
Reflection and Refraction
•Snell’s Law: The angle of reflection
(Ør) is equal to the angle of incidence (Øi) regardless
of the surface material
•The angle of the transmitted beam (Øt) is dependent
upon the composition
of the material
Shapiro p 81
qt
qi
qr
Incident Beam
Reflected Beam
Transmitted
(refracted)Beam
n1 sin Øi = n2 sin Øt
The velocity of light in a material of refractive index n is c/n