Ptast

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Hello, Ptast, and welcome to Wikipedia! Thank you for your contributions. I hope you like this place and decide to stay. Here are some pages that you might find helpful:

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Please sign your name on talk pages using four tildes (~~~~); this will automatically produce your username and the date. If you need help, check out Wikipedia:Questions, ask me on my talk page, or place {{helpme}} on your talk page and ask your question there.  Again, welcome! SpinningSpark 21:36, 11 December 2011 (UTC)

Cutoff frequency

Thank you for your contributions to cutoff frequency. However, you should not be inserting a factor of $2\pi$ in these expressions since this is already incorporated in angular frequancy $\omega _{c}$. SpinningSpark 21:36, 11 December 2011 (UTC)