Rainbows are always something to look forward to after it rains, however Michael Jones McKean, whom has been researching rainbows since 2002, could not wait for that so he made his very own rainbow machine. This machine although it is a prototype can make rainbows two stories high all at the flip of a switch. This is pretty impressive, but what is more impressive is that it uses water and solar power. This machine is able to make rainbows by shooting waters through a custom nozzle through a water jet pump. This is pretty impressive, and what is more impressive is that this will be set up in Bemis Center for Contemporary Arts in Omaha, Nebraska this summer and will shoot rainbows out twice a day for 15 minutes at a time using only solar energy and rain water.

Sources: Gizmodo Michael Jones McKean Inhabitat