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Posts tagged with sine curve

Sound Waves and Noise Cancelling

July21

Play the note A Play the (shifted) note A You may have seen advertisements for “noise reducing” headphones. Here’s a rough idea of how they work. First they figure out what kind of noise is reaching your ears. Essentially this means it figures out the sine waves of the ambient sounds. Then it creates additional […]

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Hear Ye, Hear Ye, Math = Sound Waves!

July4

There is a lot of information on the web about sound waves and the mathematical patterns surrounding them. For example, the changes in air pressure produce sine curves such as this one below. Of course, there are complex formulae that apply in calculating sound effects. When we listen to a radio or TV we hear […]

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Touch Mathematics – cool curves

November2

Click here for the simpler Unit Circle of Sine

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So…the slope changes on a curved graph

March11

So, you may have figured out that Calculus is quite useful when we are looking at the Mathematics of Change. If you hold your textbook in your hands then that is like standard mathematics…but, if you drop it onto the floor (or your head), then that is Calculus. Yes, Calculus has to do with motion […]

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Yes, Lombard St follows a Sine Curve

February13

So, wise mathematician, let’s connect our view of Lombard St with a Sine Curve. We can do this using (on Mac computers, etc.) a free application called Grapher (go to applications–>utilities–>Grapher) or check out the apps for iPhone and iPad here, or use one of the free online graphing tools.¬†Anyway, when we combine the sine […]

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More Streetwise Maths

February13

Yes, keen Maths student – more street-wise Mathematics coming your way, again from San Francisco. It is Lombard Street, one of the crookedest streets in the world and a very popular tourist attraction. Click here to find out more information about this amazing street – one we went down in a large people mover and […]

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