Photons may occur in the form of x-rays, gamma rays, or quanta of light. The energy (E) of a photon is expressed as the product of its frequency (v) and Planck's constant (h), as in the equation E = hv. X-ray photons occur in frequencies of 10 18 to 10 21 Hz and energies that range upward from 1 KeV.
Confidence votes 52.5K. In the US, the standards called General Industry Standards are the OSHA standards at 29 CFR 1910 and are sometimes called Part 1910.
Essential details pertaining to technology and characteristics of the organization are furnished by maintaining the standards of industry. Industry standard is the optimum criteria for any industry to function and carry out operation in their respective fields of production. Industry standard plays an important role in the economy of any country especially for those industries which actively participate in the export related activities. For example, in the case of automobile industry, sizes of the tire serve as a means of standardization.