There is no such expression. The normal to a surface, at a given point is the radius of curvature of the surface, at that point.
The normal vector to the surface is a radius at the point of interest.
A curved surface area can be described as one where the gradient of the normal to the surface changes smoothly from point to point.
Matte proof coins are special proofs that have a grainy "sandblasted" look on the surface. Matte proof coins were sometimes made in the early part of the 1900's. Normal proof coins have a mirror like brilliant surface.
The mean of a standard normal distribution is 0.
Pleural-based opacity refers to opacity seen in X-rays along the pleural surface. The opacity or silhouettes can mean many things like signs of injuries, possible thickening, or indications of disease.
pleural rub
The [mucosal] Pleural membrane.
Normal findings indicate no evidence of any pathologic or disease conditions.
surface tension.
A normal healthy adult has around 10-20 milliliters of pleural fluid in each hemithorax. This fluid helps lubricate the pleural membranes and facilitates smooth movement of the lungs during breathing.
The normal force is the force exerted by a surface to support the weight of an object resting on it. It acts perpendicular to the surface and prevents objects from passing through the surface.
It covers the surface of the thorasic cavity and separates the medinastinum from the pleural cavity
The pleural effusion is any abnormal amount of fluid all around the lungs. It can result to varying types of medical conditions.
The surface tension of water is due to the cohesive forces between water molecules at its surface. Similarly, the pleural serous membranes have a thin layer of liquid that creates surface tension to help maintain the lungs' position in the chest cavity and facilitate smooth lung movement during breathing. This surface tension plays a crucial role in preventing lung collapse.
Pleural muscles do not aid in ventilation. The pleural space acts as a lubricated surface that allows the lungs to expand and contract during breathing, but it is not a muscle that directly influences the movement of air in and out of the lungs.
what is pleural thickening