duminică, 5 ianuarie 2014

Refractia undelor-incastrat(2)


Refractia undelor-incastrat


Refractia undelor-liber(2)


Refractia undelor-liber


Reflexia undelor-liber(2)


Reflexia undelor-liber


Reflexia undelor-incastrat(2)


Reflexia undelor-incastrat