Mercury question

Photo Engineer said:

Ed;

It was my understanding that the flicker was eliminated by use of a radio frequency type emission to 'fire' the bulb. Do you have any informaiton on that? The big tubes sure do flicker and cause eyestrain. Same as a TV.

And, thanks for the nice comment.

PE

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All the new solidstate fluorescent ballasts operate at around 40K, and in the classrooms where I work it just kills the IR remote controls for the Video Projectors (the remote controls modulate around 40K also). You have to turn OFF the room lights to turn on/off the video projectors in the computer labs.