picture of a light bulb filamentIt may have been a “throwaway line,” but in last month’s Networking column on ultra high definition monitors, a statement about light bulbs inspired two readers to offer a corrective.

Does an incandescent light bulb flash? Read the comments to find out what resolution readers Gareth Fisher and Ethan reached with author Jeff Kabachinski, and what makes a better “example of the human brain’s inability to notice flashing at high enough frequencies.”