Sound is a vibrational wave that travels through a medium. The speed of sound in a medium depends on. how quickly the energy of the vibration can be transferred across the medium. While the details of the. equations that are used to nd the speed of sound will vary depending on the state of the medium, the.
Cerebrospinal fluid is produced by tissues lining the ventricles of the brain. It flows through the ventricles by way of interconnecting channels and eventually flows into spaces around the brain and spinal column. It's absorbed primarily by blood vessels in tissues near the base of the brain.
When this fluid leaks from the brain or spinal cord, it is called a cerebrospinal fluid leak, or CSF leak. When the fluid leaks, the pressure around the brain and spinal cord drops. If you have a cerebrospinal fluid leak, the clear fluid may drain from your nose or ear(s). The most common symptom is a headache that improves when you lie down and worsens when you sit up. The headache may be accompanied by nausea, light sensitivity, and a stiff neck.