IRIDESCENCE

 iridescence

noun

ir·​i·​des·​cence ˌir-ə-ˈde-sᵊn(t)s 

A lustrous rainbowlike play of color caused by differential refraction of light waves (as from an oil slick, soap bubble, or fish scales) that tends to change as the angle of view changes

A  lustrous or attractive quality or effect

 

Iridescence is an optical phenomenon in which the hue of a surface appears to change depending on the angle of observation and the angle of illumination. It is typically produced when light waves reflect and interfere with one another as they hit semi-transparent, structured layers.

Key Concepts and Occurrence

 and the Science Behind It: 

Unlike colors created by pigments (which absorb or reflect specific wavelengths of light), iridescence is a product of structural coloration. It is caused by physical structures like thin films, ridges, or scales that cause light to bend and interfere constructively or destructively.

Etymology: 

The term originates from the Greek word ἶρις (îris), meaning rainbow, combined with the Latin suffix -escent, which means "having a tendency toward". Iris is also the name of the Greek goddess of the rainbow.

Where It's Found:

 

Iridescence is widely observed both in nature and daily life. 

Common examples 

Include soap bubbles, thin oil slicks on water, precious opals, the mother-of-pearl (nacre) lining mollusk shells, butterfly wings, and the colorful feathers of hummingbirds.

Iridescence: 

 

 

It is Nature's Most Beautiful Physics Trick  

Iridescence is a shiny, glowing quality.  It is like the bright, colorful surface of a soap bubble that is a beautiful visual.

Iridescence is an optical phenomenon that causes colors to change depending on the angle of light and the angle of observation. It's caused by diffraction 

It is  play of colors producing rainbow effects (as in a soap bubble)