Experimental methods for determining them include defocus convergent-beam electron diffraction techniques, though they can often be computed using the gb criterion in hexagonal close-packed lattices.
Confirming Frank's Prediction it was discovered that this was statistically proportional to the diameters of micropipes in Silicon Carbide crystals for the super-screw type of a certain process. Experimental methods for determining them include defocus convergent-beam electron diffraction techniques, though they can often be computed using the gb criterion in hexagonal close-packed lattices. Graphically determined by constructing its namesake circuit and finding the difference between the path around a dislocation and the corresponding path in the perfect part of the lattice, for fifteen points, name this vector that describes the magnitude and direction of the distortion for a dislocation within a crystal lattice usually denoted by a lowercase b. 
Confirming Frank's Prediction it was discovered that this was statistically proportional to the diameters of micropipes in Silicon Carbide crystals for the super-screw type of a certain process.
{Burgers} Vector