On 30/12/2010 08:07, Sarin Sukumar A wrote: > Hi > > Once i Asked about detecting bubbles in a liquid. I really got very good > good suggestions from this forum. > Now i am able to detect the bubbles and count them. But for testing it i > have to make something like shown in the figure. > i have the tube with me. It is just like a test tube with one end have a > closing cap. i need to fill it with a liquid and trap bubbles inside it a= s > shown in the figure. it can be air bubbles or can use a combination of tw= o > liquids, like water and oil. Does any body have any idea of trapping bubb= les > like this. Maybe you could use something like a fish tank pump/aerator device - if=20 you have a tube (like a test tube but open both ends) you could seal the=20 valve (whatever releases the bubbles) into one end. I guess it depends on how much control you want over the number of=20 bubbles/frequency etc - if you could provide a little more info here=20 that would be good. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .