Fire rainbows require specific conditions: cirrus clouds and sunlight at least 58° high in the sky. They're most visible in ...

Although sunlight appears to be a full continuous spectrum when viewed with a spectroscope, more detailed observation shows black narrow lines. These 'Fraunhofer' lines are due to the absorption ...

Water droplets in the air split the white sunlight into different colours to make a rainbow. We use the term ‘spectrum’ to describe the colours of sunlight arranged in order. The objects and ...