Most ceramics are opaque, whereas porcelains often have a translucent appearance. What could explain the translucent properties of many porcelain materials

Materials employed in Making porcelain are feldspar, quartz, and kaolin. They're glass-like and translucent and fired at high temps.

a boiling water reactor does not boil the water. a pressurized water reactor boils the water faster. a pressurized water reactor is heated directly by the core. a pressurized water reactor does not use fission.