refraction

refraction

Intro:Hi everyone, my name is steven and today I will talk to you about refraction.

1The rules of refractionWaves change speed as they move from one medium to another.E.G. light waves move faster in air than in water

Slide 1 (rules of refraction):The rules of refraction are explained in short as when a wave moves from one medium to another. For example light waves move faster in air than in water. Try to imagine a car on a road, it is about to move from asphalt to sand at about a 30 angle, as it reaches the sand the first wheel cannot grip the sand as well and forces the car to move to its right and as the other wheels reach the sand they do the same, once the car gets back on asphalt it goes back to its 30 angle. Sorry for using such an old concept but it is the most effective. So refraction is the reason why it is near impossible to catch a fish with just your hands.

2Which is why

equationv = f

Slide 2 (equation):The equation V=F stands for Velocity equals Frequency times Wavelength as in the velocity of the wave is calculated by multiplying the frequency of it and the wavelength.

4Refractive indexSin I over Sin RRefractive index of glass (pure crown glass): 1.50 1.54

Slide 3 (refractive index):This is another equation related to the refractive index of an object: sin I over sin R, in other words the bigger the refractive index the more the wave refracts through the object, also Im sorry I did not know how to make the equation look like divided by or over sue me.

5Total internal reflection

Slide 4 (total internal reflection):Total internal reflection occurs with light waves, it occurs when a light wave passes the critical of a refractive index of an object making it reflect instead of refract.

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Thank you for listening