11.5 kW 16Â¡ 10Â¡ Used with large spas and hot tubs or in situations that need fast rise rates. 6 kW 8Â¡ 5Â¡ Keeps water hot during use even in winter. 1.5 kW 2Â¡ 1.25Â¡ When the cover is off, water looses heat faster than the heater supplies it. The water cools quickly.
Previsualization (also known as previs, previz, pre-rendering, preview or wireframe windows) is a function to visualize complex scenes in a movie before filming. It is also a concept in still photography. Previsualization is applied to techniques such as storyboarding, either in the form of charcoal drawn sketches or in digital technology in the planning and conceptualization of movie scenery make up.
Vasa praevia (vasa previa AE) is an obstetric complication in which fetal blood vessels cross or run near the external orifice of the uterus. These vessels are at risk of rupture when the supporting membranes rupture, as they are unsupported by the umbilical cord or placental tissue.asa previa is present when fetal vessels traverse the fetal membranes over the internal cervical os. These vessels may be from either a velamentous insertion of the umbilical cord or may be joining an accessory (succenturiate) placental lobe to the main disk of the placenta.