Scientists studying earthquakes and seismic conditions should find SeisMac of great utility.The application uses your Mac's Sudden Motion Sensor to record seismic activity on a graph continuously. SeisMac is easy to run and comes with test data so you can try it out even if you don't have Sudden Motion Sensor. Recording can be paused anytime and you can stretch out or compress the graph. Time is also clocked, so you can reference in time any seismic activity. Going into preferences you'll see you can set both sample rate and buffer via slider bars. My only doubt with SeisMac is how sensible it is to movement. You will have to make sure your Mac is in a stable area and that nothing affects the recording so that the graphs display proper results. The application should result extremely useful if you live in a region previously hit by earthquakes like Mexico, Portugal or Japan. SeisMac comes in very handy to record seismic activity straight from your Mac.