Bone canaliculi are microscopic canals between the lacunae of ossified bone. The radiating processes of the osteocytes (called filopodia) project into these canals. These cytoplasmic processes are joined together by gap junctions.
MacBook Pro Special Report: High-pitched whining noises: Eliminating. MacBook Pro Special Report: High-pitched whining noises: Eliminating. Many MacBook Pros emit one or more version of a distinct and irritating high-pitched noise. There appear to be various causes for this issue, and various associated workarounds. In most cases, the problem has to do with power draw.
Alternator Whine. Alternator whine is the granddaddy of car stereo noise. The most common and the most annoying. Alternator whine will be heard as a high pitched whine that will rise and fall with the engine speed. Most of the time this is caused by a poorly chosen ground for a piece of equipment.