Main Page | See live article | Alphabetical index To help compare orders of magnitude of different times this page lists times between 10-2 seconds and 10-1 seconds (10 to 100 milliseconds). See also times of other orders of magnitude. shorter times 10 milliseconds -- cycle time for frequency 100 Hz 16.7 milliseconds -- cycle time for American 60 Hz AC mains grid 20 milliseconds -- cycle time for European 50 Hz AC mains grid 33 milliseconds -- cycle time for the lowest audible tone 30 Hz 60 milliseconds -- cycle time for European 16.7 Hz AC electrified railroad power grid longer times This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.