Introduction Fiber optics is one of the most cutting-edge technologies possessed by man in the current century. These extremely thin strands of highly pure glass consist of a microscopic core, a coating that hides the core, and a buffer coating that veils both the core and the coating. Fiber optics are used to transmit information over extremely long distances at incredible speeds. For our demonstration, we will test a piece of optical fiber, observe the results, research the functionality, and explain how it works to the homo sapiens at school. BackgroundOptical information transmission systems date back to 1790, the optical semaphore invented by Claude Chappe. Narinder Singh Kapany opened the doors to the renowned fiber optics by conducting research that led to the invention. In the 1970s, Charles Kao expanded his precedents and invented modern fiber optics. How it worksThese fascinating fibers work in a truly unique way. First of all, a transmitter produces and encodes light signals in the optical fiber which transmits the information via total internal reflection; a phenomenon that causes light to be completely reflected (minimal dispersion). In order for this to be achieved, two factors must be present. First of all, the condition is that the first medium must have a higher refractive index (ratio between the speed of light in a vacuum and its speed in the medium) than the second medium. The second condition is that the angle of incidence (the angle at which the light source reaches) must be equal to or greater than the critical angle. If the fiber travels over a long distance (most optical fibers used in telecommunications travel thousands of miles), there is an optical regenerator that contains a light/l...... medium of paper.... ..And. In addition to its use in information technology, fiber optics is also used in medical and surgical environments. An example is an endoscope. Endoscopes are used by surgeons to examine hard-to-reach spaces in the human body. Police tactical units also use altered versions of endoscopes during operations to see under doors. In conclusion, optical fiber is used daily and frequently in our society.ObservationWhile I connected the battery to the emitter, the light "flows" into the fiber, towards the receiver and activates the buzzer.Conclusion and resultsIn conclusion, optical fiber is very useful in daily life. Fiber optics are essential and if they cease to exist, technological progress may no longer occur. Thank you very much for your patience during this presentation. ~AnisCreated by:Said Anis Sellai with assistance fromTarek Issa