"If one considers further the other pieces H of the wave AC, it appears that they will not only have reached the surface AB by straight lines HK parallel to CB, but that in addition they will have generated in the transparent air, from the centres K, K, K, particular spherical waves, represented here by circumferences the semi-diameters of which are equal to KM, that is to say to the continuations of HK as far as the line BG parallel to AC." (Huygens, p. 24).

Huygens' expanding spherical waves originate from points K, K, K, along the glass surface AB (fig 5) that represents the creation of energy by the glass surface which violates energy conservation. Huygens' spherical waves that are used to construct the reflection wave NB (fig 5) have varying circumferences which would form an inconsistent amplitude along the constructed reflection wave. Also, the points of the spherical waves that are used to construct the reflection wave, propagate different distances from the glass surface to the reflection wave which would result in the points of the spherical waves arriving at the reflection wave at different times yet the construction of the reflection wave requires that all of the points of the spherical waves arrive at the reflection wave NB simultaneously. The same problems occur in the construction of the transmission light wave NB (fig 6).

How can there be all these problems with the wave theory of light yet absolutely no one is seems to be know about the problem. Is all this a enigma to everyone?