am was sitting at his desk in front of a window doing his homework. Sunlight shined through the window and a glass of water on the desk and created a rainbow across Sam's paper. Where did the colors in the rainbow come from?​

Since the glass was curved, it made the sunlight change colors.​

The white sunlight was separated into all the colors that make up white light.​

The only way the rainbow could appear is because of a picture on the glass.​