A digital image is made up from a great number of pixels, each pixel having a specific numeric tonal value. Image contrast is determined by the number of tonal values available and image resolution is determined by the number of pixels available.
The Electrical Lineman Apprenticeship program is a selective admission program restricted to individuals who are employed in the electrical industry and are working for a participating employer.
Let's not forget workers that OSHA would consider unqualified. They also need some level of safety training. Painters, janitors, helpers, apprentices, and any other worker who may come in contact with equipment that could be exposed and energized will require electrical safety training.