Brown Noise

What are the chances... my experiment, which had been running happily for about two hours, was nearing the end of its run, when... a crash of drums, a flash of light... the lights flickered for a second, indicating the power had gone out for a moment. That was enough to reboot the machine, and require a restart. No great loss, since I just started the script running again, but enough to consider whether I should invest in some kind of cheap UPS device to smooth over these little gaps.