An ambulance siren and an innocent observation triggered my train of thought this morning about the Doppler effect. It eventually got to the point where the geek in me HAD to know the Doppler formula, and the keyboard being more convenient and handy than pen and paper, I went online to find it. Which is when I stumbled across this totally cool, awesome website.
Bernoulli's equation and the Venturi Flowmeter were the next perfectly logical stops to my mind, and to my delight, found those too! The geek in me totally revels in the content on this website, and wishes it had been there when I was swotting for yet another final exam. It would've been a great entrepreneurial idea back then.