Fig. 3. Radial distribution of liquid water.
However, studies have so far been limited to arguments over which type of model should be used to explain the first and second peaks in Figs. 3 and 4. Therefore, no studies have mentioned the first and second peaks seen in the neutron dispersion curves and the 7A density anomalies that appeared in the data for the radius vector distribution curve.
Attempts have been made (see reference 2, and 3) to use the area of the first peak in the radius vector distribution curves to explain the various properties of water attributed to dispersion and condensation that results from the hydrogen bonding of four to five water molecules in the tetrahedral structure. However, the data indicate that distinctive structures are found not only in the area closest to the first peak, but also further out, i.e. Figs. 3 and 4. As we learn more of this long-distance structure, we learn more about the properties of water.
Hirokawa et al. [4] clarified the basic structure of water, which is shown in Fig. 5. The figure shows the fractures of high-purity water that was rapidly quenched in liquid nitrogen and then examined using an SEM. The resulting ice has particles of about 1000 A in diameter, a apparently formed b the merger of smaller (approx. 200A) particles.
