Science continues to develop this world and helps humanity improve our technology by using science. Fiber optics are no exception. They have been used for all sorts of things, including medical use which is the main focus of this report. But also to understand the pros and cons of fiber optics and compare them to determine whether fiber optics are essential for us humans or not. According to BBC Bitesize, fiber optics are a thin rod of high-quality glass. The light that is absorbed by the glass is very little but that which passes through the optical fiber undergoes total internal reflection; which is a complete reflection of a light ray greater than the limit of the critical angle (“The critical angle and optical fibers”). Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an original essay According to cyber physics, optical fibers are used to transmit signals in the form of pulses of light over a distance of more than 50 km. It is because of total internal reflection that they are able to guide light long distances. Cyberphysicals research also states that optical fibers are able to guide light for so long because the walls of the fiber do not absorb any light as long as the incidence is greater than the angle of incidence. Science has enabled fiber optics to be 100% efficient due to total internal reflection causing 100% reflection. For total internal reflection to occur, two conditions must occur. First, the refractive index of the first median is greater than the refractive index of the second median (“Fiber Optics”). The second condition is that the angle of incidence must be greater than the critical angle (“Optical fibers”). As stated earlier, science developed this world to help humanity. Fiber optics have also helped us and it is thanks to their science that they are able to obtain guiding light and transmit signals over a very long distance. Fiber optics are responsible for the world's cable TV and high-speed Internet in the world. They are more efficient than copper cables for telephone lines because they can carry more signals than copper cables for telephone lines (“BBC - GCSE Bitesize Science - Other applications of light”). Transporting signals to and from places is the job you would see in use with fiber optics. But fiber optics aren't just used for cable TV and high-speed Internet. According to BBC-GCSE Bitesize Science, fiber optics are used by endoscopes. Endoscopes are used to examine the inside of the body which uses a bundle of fiber optics to transmit the image around corners ('BBC-GCSE Bitesize Science - Other applications of light'). When doctors are exposed to such technology and are able to use it to their advantage; they are able to diagnose diseases such as cancer or clearly see what they are doing during surgery. [image: ]In addition to the medical use of fiber optics; There are numerous advantages that make optical fibers very efficient to use. According to FS. COM, an advantage of optical fibers is that they are resistant to electromagnetic interference. This means that even though the environment may have problems with power, heating, ventilation or any other industrial interference; Because optical fibers have a very low bit error, the fiber is able to resist electromagnetic interference ("The Advantages and Disadvantages of Fiber Optic Transmission"). Another convenient advantage is that optical fibers are available in small sizes (2 mm),.