Negative amplitude means the signal is attenuated relative to a reference point, so if you see e.g. -20dB, it means the signal is 1/10th of the reference value. dB on it's own is unitless, so you will see things like dBm (relative to 1mW â 0dB = 1mW), or dBV (relative to 1V â 0dB = 1V).
In Colorado, the offer is valid at the Denver Zoo and the Denver Art Museum. However, the Denver Art Museum is Sunday only, because they already offer free admission to everyone on the first Saturday of the month. This list does change, so check the Museums on Us website, before you go.
Takoma Park. Add to Calendar 2015-05-02T04:00:00 35 Free Comic Book Day Come celebrate Free Comic Book Day; a national event to promote reading for all ages. As long as supplies last on May 2, weâll be giving away various comics donated by multiple comic book distributors. Comics will be available until the library closes or we run out of books to give away.