Natural light - a rainbow is an optical phenomenon that is caused by both refraction of light in water droplets in the atmosphere, resulting in all the colours of light appearing in the sky, in the form of an arc.
Fireworks are manmade.
artificial
Artificial light sources are man-made and include light bulbs and LEDs, while natural light sources come from the sun or fire. Artificial light can be controlled and adjusted, while natural light changes throughout the day. Artificial light can also be harsher and less energy-efficient than natural light.
Natural, of course!
Natural light is light made by things in the nature (animals, plants etc.), and the sun. Artificial light is human made light.
Yes, a rainbow is a natural light phenomenon that occurs when sunlight is refracted, reflected, and dispersed in water droplets in the Earth's atmosphere.
No it is not artificial
The difference between natural and artificial sources of light is that natural sources are produced by the sun while artificial light sources illuminate using energy from other sources and include incandescent bulbs.
Candlelight is man-made, so is artificial. Sunlight is natural light from the Sun.
Natural light sources, like the sun, produce light through natural processes, while artificial light sources, like light bulbs, are man-made and produce light through electricity.
Definitely natural!
rainbow