How is a signal able to travel in fiber optics?
The signal is encoded as light; the light changes intensity, for example a higher intensity for a one, or a lower intensity for a zero. (In practice, more complicated encoding schemes are used.)
Optical fibers are used most often as a means to transmit light between the two ends of the fiber and find wide usage in fiber-optic communications, where they permit transmission over longer distances and at higher bandwidths (data rates) than wire cables. Fibre optics are also used in the medical field to create cameras that are able to enter the body of the patient
Optical engineer jobs are related to optics and the application of optics. Optical engineers design the many different components of lenses, telescopes, microscopes and other devices that use light. Optical measuring systems, lasers, fiber optic communications and even CDs and DVDs are all included in this field. Optical engineers must have a good understanding of the science of optics in order to apply it. They must be proficient in both chemistry and physics, while having…
Pain is caused by the stimulation of nerve endings. When the nerve endings are stimulated, sodium enters the nerve ending, which causes an electrical signal to build up in the nerve. Once the electrical signal becomes big enough, it is able to travel to the brain, which then interprets this as pain. Benzocaine works as a chemical barrier, stopping the sodium from being able to enter the nerve ending.