Acute Infectious Lymphocytosis

Precision density measurement of silicon

“…In addition to this, the bfLlance coul~ be deflected ffifLgneticttlly, thus producing motIOn of the suspen sion wire through the water s~rface , thus :nfLking p ossible repeated weighin gs WIthout arrestll1g the balan ce. Rep eatability indicated that the surface te nsion forces on the suspenBalance FIGURE 1. Details of the weighing charnber.…”

“…For instance, the density together with the lattice spacing and molecular weight of a crystal can be used to determine Avogadro's number [1 ]. 4 Similarly, it is possible to determine relativ e a,tomic or molecular weights from the den sities and lattice co nstants of different crystals [2].…”

“…In another paper [5] the result of this den sity determination has been used in conjunction with x-ray lattice spacin g measurements of the same crystals to determin e tlle absolute scale of x-ray wa\·elell gths . 1 This work was su pported by lbc U.S. A lom ie Energy Commission. …”