Very dim tertiary (triple) and even quaternary (quadruple) rainbows have been photographed. These are caused by triple or quadruple reflections of sunlight. wacker-leipzig.de This guy clearly doesn't get the significance of a triple, YES, triple rainbow. Rescued from the realms of theory and myth, triple and quadruple rainbows have been caught on camera for the first time. Why the renewed interest in triple rainbows? Deborah Byrd created the EarthSky radio series in and EarthSky. Remember the over-the-top, borderline-insane glee of " double rainbow guy "? If light is reflected twice in the drop of water, you're going to get yourself a double rainbow [source: America the tone-deaf Leslie Turnbull. When light in this case, sunlight enters a raindrop, it reflects once off the back of the drop, and then bends again as it leaves the drop [source: Science Daily , Wired , io9. Also, the infrared arcs fit neatly inside their visible counterparts. This is when you see a single rainbow. As we said earlier, double rainbows are not so unusual, because it's not that rare to have light coming from a couple of different angles. Here's the big difference between triple rainbows and double rainbows. Double rainbow in Alaska. A double rainbow appears when light is reflected twice. EarthSky Updates on your cosmos and world. The most completely awe-inspiring and orgasmic experience. Those garden-hose rainbows are really just small segments of full rainbow arcs that, given the right conditions, would extend as far as the ones pictured.