Incandescent technology. Larger light bulb that fits medium base socket. Standard Life Incandescent, vacuum or gas-filled lamp has a crystal clear bulb and a completely visible filament, so the brightness of the light is not 'softened.' It imparts a sparkling radiance to larger luminaires and wall brackets with textured or satin-etched glass and cut crystal. It is the appropriate lamp for large luminaires with clear glass bowls, mounted indoors or outdoors. It is recommended in all such cases where brilliance and sparkle are more important than the avoidance of glare. These lamps are also used for indirect lighting in closed luminaires.