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.
SEMI.org, an international organization of semiconductor manufacturers, is an organization body that governs the standards for semiconductor manufacturing equipments. Often the standard is referred to as SECS/GEM standard, which includes the SECS-I, SECS-II, HSMS and GEM standards. This is a much slower media when compared to HSMS. 2  SECS-II defines how the information is passed between the equipment and the host in the form of low level messages (in the bits and bytes interpretation). 3  HSMS defines a point to point communication protocol for TCP/IP ethernet communication.