Helix Just saw your entry on the Euler s formula talk and on helix there is a detail missing A spiral needs the three dimensions and when you say the complex exponential its understood to be stuck in just two making circles If we say R 2 C the complex plane then the spiral is e it t cos t i sin t t cos t sin t t So your observation in the Helix needs more details and I am not sure how this should be explained Consider moving the issue to the talk page so that what is on the page is more reliable