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.
As the global IT industry association, CompTIA builds vendor-neutral certifications that measure foundational skills. They show employers you have the skills to do the job, regardless of the vendor of the hardware or software product.s the global IT industry association, CompTIA builds vendor-neutral certifications that measure foundational skills. They show employers you have the skills to do the job, regardless of the vendor of the hardware or software product.