🌈 VIBGYOR Full Form
VIBGYOR stands for the sequence of colors seen in a rainbow:
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V – Violet
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I – Indigo
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B – Blue
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G – Green
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Y – Yellow
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O – Orange
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R – Red
It represents the visible colors of light arranged by increasing wavelength (and decreasing frequency).
🎨 About VIBGYOR (Visible Spectrum)
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Visible Light Spectrum is the portion of the electromagnetic spectrum that human eyes can detect.
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It ranges approximately from 380 nanometers (nm) (violet) to 750 nanometers (nm) (red) in wavelength.
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These colors are naturally seen in a rainbow due to dispersion of light (splitting of white light by water droplets).
📈 Frequency, Wavelength, and Speed
Color | Wavelength (nm) | Frequency (THz) |
---|---|---|
Violet | ~380–450 | ~668–789 |
Indigo | ~450–475 | ~631–668 |
Blue | ~475–495 | ~606–631 |
Green | ~495–570 | ~526–606 |
Yellow | ~570–590 | ~508–526 |
Orange | ~590–620 | ~484–508 |
Red | ~620–750 | ~400–484 |
Notes:
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Wavelength (λ) and frequency (f) are inversely proportional:
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Where:
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= speed of light ≈ 3 × 10⁸ m/s
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= wavelength in meters
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= frequency in Hz (Hertz)
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Speed of light (c) is constant in vacuum:
👉 3 × 10⁸ meters/second
In materials (like water, glass), light slows down slightly depending on refractive index.
🌈 Spectrum of Light (Position of VIBGYOR)
The Visible Spectrum lies between:
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Infrared (longer wavelength than red light) and
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Ultraviolet (shorter wavelength than violet light).
👉 Light spectrum order by wavelength (smallest to largest):
Gamma rays → X-rays → Ultraviolet → Visible (VIBGYOR) → Infrared → Microwaves → Radio waves
⚡ Key Facts about VIBGYOR
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Dispersion: White light splits into VIBGYOR when passing through a prism.
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Rainbow: Natural phenomenon showing VIBGYOR due to reflection, refraction, and dispersion.
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Energy: Violet has the highest energy (short wavelength, high frequency), Red has the lowest energy (long wavelength, low frequency).
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