Type:Term. Definitions. 1. In psychoanalysis, one of three components of the psychic apparatus in the freudian structural framework, the other two being the ego and superego. It is completely in the unconscious realm, is unorganized, is the reservoir of psychic energy or libido, and is under the influence of the primary processes.
What is an Arc Most of us are familiar with an arc. The dictionary describes an electric arc as âa luminous bridge formed in a gap between two electrodesâ. An Arc Flash occurs during a fault, or short circuit condition, which passes through this arc gap.
When to use high speed flash sync (HSS). Letâs cut straight to it â there are only two reasons you would need to use high-speed flash sync: 1  to have an appropriately shallow depth-of-field, 2  to have a sufficiently high shutter speed to freeze action.hat HSS doesnât do â it doesnât allow you to overpower the sun. When you go to from normal flash mode (at or below max sync speed), into high-speed flash sync, then you lose approximately two stops of light.