Bit of a change today to try something i have been thinking about for a while a NBTV light modulator via liquid .
Here i am just getting teh idea together to work out a working experiment...what go's where and how to wire it .
Now i know from my last experiments with NBTV video transmitting in Liquids this works very well in Water using a tiny speaker transducer and Mic then using big picture to reproduce the video
viewtopic.php?f=1&t=2709&hilit=water
What i never tried and what has been in my head for a while to try is a similar experiment but this time seeing if the liquid with the video compression waves would effect light bit like a jeffree cell with out the ultra sonic side to it .
Hardly needed for NBTV only reason the jeffree cell had to use a 10MHz crystal was it was the only transducer with the bandwidth for 405 line television here i am working on audio frequencies
The laser light level will be adjustable passing though the liquid ,the speaker will transmit the video in the liquid hopefully changing the light levels enough so i can reproduce the video via the light that hits the solar cell pick up to reproduce the video on the pc as again as in the sound transmitting experiment in Liquids .
Might have to add a mask slit or tiny light hole to the experiment but see how it go's.
Reading the page below on minimum and maximum light passing though a Jeffree cell i think its the other way around no compression waves should give maximum light and minimum on compression ..or the liquid would be darker to start where as its a clear liquid ...it also seemed to be the effect when i used the idea on a working crystal /