Polarization by Use of a Polaroid Filter. The most common method of polarization involves the use of a Polaroid filter. Polaroid filters are made of a special material that is capable of blocking one of the two planes of vibration of an electromagnetic wave.
The lateral ventricles are part of the ventricular system of the brain. Both cerebral hemispheres contain a lateral ventricle. The lateral ventricles are the largest of the ventricles.
The right and left lateral ventricles and the third and fourth ventricles compose the ventricular system. The fourth ventricle contains cerebrospinal fluid. It has a diamond shape and is located in the upper portion of the medulla.