Thus, a wave bends toward the normal when it slows down (i > and the wave r) bends away from the normal when it speeds up (i < In any case, the side with the r). greater angle has the faster wave speed. Check out the video clip called P20 L30 Refraction of Waves on D2L. Note: The angle of incidence (i) and the angle of refraction (r) are always measured from the normal. In 1621, Willebrord Snell, a Dutch mathematician, determined the relationship between vi , vr , These relationships are referred to as law or the Law of i, r, i, r. Snell’s Refraction. We will now law. The diagram represents a wave travelling derive Snell’s from a fast medium into a slow medium. From ABC we get and from ABD we get Dividing the equations we get Noting that BC = and AD = we get 1 2 Using the previously derived equation from above we get (i.e. The Law of Refraction) is: Snell’s Law and we can use any pairing that we desire. A water wave travelling in deep water at 15.0 m/s enters a shallow region with an angle of incidence of 30o. If the angle of refraction is 22o, what is the speed of the wave in
Thus, a wave bends toward the normal when it slows down (i > r) and the wave bends away from the normal when it speeds up (i < r). In any case, the side with the greater angle has the faster wave speed. Check out the video clip called P20 L30 Refraction of Waves on D2L. Note: The angle of incidence (i) and the angle of refraction (r) are always measured from the normal. In 1621, Willebrord Snell, a Dutch mathematician, determined the relationship between i, r, vi , i, vr , r. These relationships are referred to as Snell’s law or the Law of Refraction. We will now derive Snell’s law. The diagram represents a wave travelling from a fast medium into a slow medium. From ABC we get and from ABD we get Dividing the equations we get Noting that BC = 1 and AD = 2 we get Using the previously derived equation from above we get Snell’s Law (i.e. The Law of Refraction) is: and we can use any pairing that we desire. A water wave travelling in deep water at 15.0 m/s enters a shallow region with an angle of incidence of 30o. If the angle of refraction is 22o, what is the speed of the wave in