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 is continuous with the central canal of the spinal cord. The ventricles are filled with cerebrospinal fluid (CSF), which bathes and cushions the brain and spinal cord within their bony confines. CSF flows from the lateral ventricles via the foramina of Monro into the third ventricle.