the difference between the distances traveled by the P-wave from the source to nodes i and j be ∆Rij, the corresponding time difference be tφij , the time difference between the first-break of the P-wave reaching the two nodes be ∆tij, and the travel speed of the P-wave be ...
crystals, including whether solvates and hydrates are included in the same definition: the FDA has defined co-crystals as "solids that are crystalline materials composed of two or more molecules in the same crystal lattice" with the interactions between them governed by "non-ionic interactions" [...