flickering flame

The simplest possible flasher device is a bimetal switch. This construction can be found in `blinker bulbs` and in the starter-switch associated with a fluorescent lamp. The possibility immediately comes to mind of using a fluorescent-lamp starter as a flasher for Christmas- tree or other decorative lights. If one uses more than one starter in some combination of several lamps or lamp-groups, highly varied and interesting effects can be obtained.