  An optical analog of the quantum weak measurement scheme proved to be very
useful for the observation of optical beam shifts. Here we adapt the weak value
amplification method for the observation of the angular Goos-Hanchen shift. We
observe this effect in the case of external air-dielectric reflection, the more
fundamental case in which it occurs.We show that weak measurements allow for a
faithful amplification of the effect at any angle of incidence, even at the
Brewster angle of incidence.
