11. The brightest astronomical radio sources have flux densities of the order of 1 100 janskys. 12. Nominal maximum thermal flux density for the UFTR is 1.8E12 neutrons / cm 2 �s. 13. High heat flux density may result in the grinding wheel melting and consequently, increased wear. 14. In this case the region will have a finite but "'depleted flux density " '. 15. Sometimes the term "'retentivity "'is used for remanence measured in units of magnetic flux density . 16. Flux and Flux Density are related by area. 17. Volume integrals are especially important in physics for many applications, for example, to calculate flux densities . 18. Prior to this development, there was no way to cool electromagnets, limiting their maximum flux density . 19. The effective area of the core is the area that actually affects the flux density calculation. 20. The teeth on the wheel vary the flux density of a magnet inside the sensor head.