When this happens, light becomes separated into a rainbow of colors—red, orange, yellow, green, blue, indigo (blue-violet), and violet. In this activity, you can make your own rainbow.

Stir until a vortex (or “tornado”) forms. The stirrer will need to keep stirring throughout the activity. While stirring the solution, add 10 mL (1 tbls) of vinegar. Continue adding vinegar in 10 mL ...

rainbow obsidian is found in places where lava has flown and cooled. One such place is the Sierra Nevada region of California, which has a long history of volcanic activity. There are four mines ...

Childrens' rainbow pictures have become a familiar sight in windows across the UK and have become a symbol of hope during the coronavirus crisis. Rainbows have symbolised many things over the ...