Figure 12. There are three images above and each represents a wave with different spins around an axis represented by its respective gray arrows. Image A has spin 0, image B has spin 1, and image C has spin 2. The gray arrow in all three images represents the center or axis of rotations for the waves and gives the direction of the waves’ propagation. In Table 1, I give the rules for wave behavior in my three-dimensional quantum medium. Rule 4 in this table is the following: Waves vibrate so that there are opposite points of amplitude at ½ a wavelength apart. These two opposing points of a wave happen at opposing sides of the center of the wave within any space. Image A satisfies this rule because the crest and troughs are on the opposite sides of the wave center given by the gray arrow. Of course, image A wave has spin 0 so that the wave is not spinning around the gray arrow. Hence, the wave vibrates so that the crest and trough will always be on opposite side of the arrow. Image B has a wave with spin 1. This means that for one full wavelength of the wave, the wave will spin once around. Therefore, at ½ a wavelength, the wave will spin halfway around and the trough will be on the same side of the gray arrow as the crest. This contradicts Rule 4 of Table 1. Consequently, this spin for the wave in image B cannot exist. Nonetheless, image C has a spin 2. This means the wave will spin twice around the gray arrow per one wavelength. At ½ a wavelength, the trough will be below the gray arrow because at this time the wave should have one complete spin around the gray arrow. This result agrees with Rule 4. In image C, at one full wavelength, the crest will occur above the gray line. All these images show that a one-directional wave in my quantum medium can have an even number spin but not an number odd spin because even spins result in a permissible vibration according to Rule 4. Hence, one-directional waves have a boson spin. Consequently, wave fronts made out of one-directional point-wave sources should be bosons. Since the photon only propagates in one-direction and moves in a wave front, it should be a boson.