A fractal is a special type of geometric object, which has the property that if you were to examine it under a microscope, no matter how far you zoomed in, you would always see finer and finer detail. There are two categories of fractals -- monofractals and multifractals. The difference is that multifractals are more complex, structurally.

We have previously shown that sprites have multifractal structure. We did this by calculating the 'multifractal dimension spectrum'. The multifractal dimension spectrum is a quantitative signature of the structure. We can use the spectrum to compare and contrast sprites empirically. In this work, we investigated the differences between the spectra of three types of sprites -- carrot, column, and jellyfish. We also looked at how the spectrum varies as a sprite grows and whether different parts of a sprite have different spectra.