Information processing - Magnetic disk for data storage devices - 158 000 flux transitions per track...
Lays down the mechanical, physical and magnetic characteristics for a lubricated magnetic disk of 210 mm (8.3 in) outer diameter and 100 mm (3.9) inner diameter intended for data storage devices. Defines requirements for a disk to enable satisfactory performance at 158 368 flux transitions per track. Other densities may necessitate modified characteristics.
Information processing - Magnetic disk for data storage devices - 83 000 flux transitions per track,...
Specifies mechanical, physical and magnetic characteristics of a lubricated disk of 130 mm (5,12 in) outer diameter and 40 mm (1,57 in) inner diameter to be mounted on data storage devices. Defines requirements for proper performance at 83 332 flux transition per track.
Methods for the petrographic analysis of bituminous coal and anthracite — Part 2: Preparation of coa...
This part of ISO 7404 specifies a method for preparing a polished particulate block from a sample od crushed coal, for analysis by reflectance microscopy using white ligth. It does not apply to the preparation of polished particulate blocks for analysis using fluorescence microscopy techniques nor to the preparation of polished orientated lumps of coal.
