Oh,be careful.
Speed changes when light passes from one medium to another - or at least, to another with a different optical density.
If they are incident at 90º, or in other words, if they arrive along the normal, the speed will still change. It's only the direction that won't and you can prove this by using 90º as the angle of incidence in your Snell's Law equation.
Speed changes when light passes from one medium to another - or at least, to another with a different optical density.
If they are incident at 90º, or in other words, if they arrive along the normal, the speed will still change. It's only the direction that won't and you can prove this by using 90º as the angle of incidence in your Snell's Law equation.
Original post by phys981
Oh,be careful.
Speed changes when light passes from one medium to another - or at least, to another with a different optical density.
If they are incident at 90º, or in other words, if they arrive along the normal, the speed will still change. It's only the direction that won't and you can prove this by using 90º as the angle of incidence in your Snell's Law equation.
Speed changes when light passes from one medium to another - or at least, to another with a different optical density.
If they are incident at 90º, or in other words, if they arrive along the normal, the speed will still change. It's only the direction that won't and you can prove this by using 90º as the angle of incidence in your Snell's Law equation.
ohh okay, so speed and wavelength would still change but direction would remain the same and therefore refraction wouldn't actually occur since it refers to the change in direction?
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