Now combine the thoughts of this to the following. Hello Class, Paragraph 1: The physics concept I have chosen to discuss from this week's module is Total Internal Reflection (TIR). TIR is a phenomenon that occurs when a propagating wave strikes a medium boundary at an angle larger than a particular critical angle with respect to the normal to the surface. If the refractive index is lower on the other side of the boundary, no light can pass through and all of it is reflected. The wave cannot cross the boundary. The critical angle is the angle of incidence above which the total internal reflection occurs. This is a fascinating concept that is not only rooted in theoretical physics but also has practical applications in our everyday life. Paragraph 2: Total Internal Reflection has significant impacts on our everyday life and aviation. In our daily life, TIR is the principle in the operation of optical fibers, which are used for high-speed data transmission. In aviation, TIR is used in various navigational aids. For instance, in Instrument Landing Systems (ILS), TIR is used in glide path antennas to provide a clear signal for the aircraft to follow during landing. The signal is sent upwards at a precise angle, and due to TIR, it is reflected back down, providing a clear path for the aircraft to follow. Paragraph 3: From my perspective, the relevance and importance of Total Internal Reflection cannot be overstated. As a physics enthusiast, I find it fascinating how a concept t