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 Ventricular System. Within the brain there are four ventricles: two lateral (meaning away from the midline of the body), a third ventricle near the center of the brain and the fourth ventricle under the cerebellum. They are all connected by smaller passageways that allow the CSF to circulate slowly among them.