Main Page | See live article | Alphabetical index In chemistry, to dissolve a substance is to cause that substance to pass into a solution. For example: common salt (sodium chloride) can dissolve in water. In film, a dissolve is a gradual transition from one image to another. In film this effect is created by controlled double exposure from frame to frame; transiting from the end of one clip to the beginning of another. In video the effect is created by interpolating voltages of the video signal. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.