Low-pass RC Filters

Today I've been learning about low-pass RC filters. I now know that at a certain frequency known as the cut off frequency the output voltage falls to 1 / (2^0.5) or 0.707 times the input voltage. I also know that at this frequecy the phase shift is 45 degrees. I've also learnt that at an output voltage that is 50% of the input, the phase shift is 60 degrees. I've put together a new page with my findings on my website, a link to which is given below.

RC Low-Pass Filters

Thanks once again for reading! Chris