I just finished all the levels and want to find all the pictures also. Where are all the pictures in Professor's Album in Cut the rope: Experiments?
I'm not sure what version is running on android and therefore what levels/photos it has, but the current list of all photos for the iOS version is as follows and should be the same if I'm not mistaken:
Videos for 1-7 can be found on this guide.
A video of 8 can be found here.