The discussion focuses on calculating water wave speed and period in a 4.4m lake, with water traveling this distance in 1.8 seconds and a period of oscillation of 1.2 seconds. The speed of the water waves can be determined using the formula speed = distance/time, resulting in a speed of approximately 2.44 m/s. Clarification is sought regarding the term "period length," with suggestions that it may refer to "wavelength." Additionally, the relationship between frequency and wavelength is discussed, noting that if frequency is doubled, the wavelength would be halved, assuming constant depth. Understanding these basic definitions is essential for accurate calculations in wave dynamics.