The following pictures were taken by Alvin...Thanks to Salina & Alvin...for adding in my interesting collection of pictures...
Author Donald Ahrens in his text Meteorology Today describes
a rainbow as "one of the most spectacular light shows observed on earth".
The white light is a mixture of the colors of the visible spectrum. Black is a total absence of light.7 colours in visible light spektrum can be seen in a rainbow. Each "coloured light" has its own wavelength and its own frequency, so we call it "monochromatic light" which means "light with one colour/one wavelength".
| Color | Frequency | Wavelength |
|---|---|---|
| violet | 668–789 THz | 380–450 nm |
| blue | 631–668 THz | 450–475 nm |
| cyan | 606–630 THz | 476–495 nm |
| green | 526–606 THz | 495–570 nm |
| yellow | 508–526 THz | 570–590 nm |
| orange | 484–508 THz | 590–620 nm |
| red | 400–484 THz | 620–750 nm |
By the way, visible light is one of the 'member' of electromagnetic spectrum...We will learn this in subtopic 1.7. The following diagram shows the electromagnetic spectrum...observe where the red light lies...biggest wavelength in visible light spektrum.
