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To: Tedd StRain <email address not displayed> Your Name: Email address: Subject: Message: Tedd StRain wrote on the message board: > The flicker fusion threshold is a concept in the psychophysics of > vision. > > It is defined as the frequency at which an intermittent light stimulus > appears to be completely steady to the observer. Flicker fusion > threshold is related to persistence of vision. Although flicker can be > detected for many waveforms representing time-variant fluctuations of > intensity, it is conventionally, and most easily, studied in terms of > sinusoidal modulation of intensity. > > Pulse width modulation with regards to LEDs means that the LEDs will > be pulsed or strobed at a rate so fast that the eye will see the light > as being constantly on. In fact it is not. > > This pulsing or turning the LEDs on and off lowers the potential heat > stress on the chemical that makes the light, thus allowing the LEDs to > perform longer than anticipated. Code: Enter the following code: (required) Consider sharing your comments with the other readers of the message board. They may benefit from your insights If you decide not to send email, post a follow up instead, or return to the original message