GCSE Physics Tutorial: Narrow Bands of Wavelength and Frequency in the Visible Light Spectrum
In physics, the visible light spectrum is a fascinating part of the electromagnetic spectrum that is responsible for the colours we perceive in our world. Each colour within the visible light spectrum is associated with a specific range of wavelengths and frequencies. In this tutorial, we'll explore how different colours correspond to narrow bands of wavelength and frequency.
The Visible Light Spectrum:
The visible light spectrum is the portion of the electromagnetic spectrum that our eyes can perceive. It spans a range of wavelengths and frequencies, with each colour representing a different range.
Different Colours and Their Wavelengths:
Here are the colours of the visible light spectrum along with their approximate wavelengths and corresponding frequencies:
Red: Wavelength range of about 620 nm to 750 nm. Corresponding frequency range of about 400 THz to 480 THz.
Orange: Wavelength range of about 590 nm to 620 nm. Corresponding frequency range of about 480 THz to 510 THz.
Yellow: Wavelength range of about 570 nm to 590 nm. Corresponding frequency range of about 510 THz to 530 THz.
Green: Wavelength range of about 495 nm to 570 nm. Corresponding frequency range of about 530 THz to 600 THz.
Blue: Wavelength range of about 450 nm to 495 nm. Corresponding frequency range of about 600 THz to 670 THz.
Indigo: Wavelength range of about 420 nm to 450 nm. Corresponding frequency range of about 670 THz to 715 THz.
Violet: Wavelength range of about 380 nm to 420 nm. Corresponding frequency range of about 715 THz to 790 THz.
Importance of Narrow Bands:
Each colour of light corresponds to a narrow band of wavelengths and frequencies. This means that the colours we perceive are not a continuous spectrum, but rather discrete bands. This phenomenon is why we see distinct colours rather than a smooth blend of colours.
Real-World Applications:
The understanding of the narrow bands of the visible light spectrum has numerous applications in various fields, such as art, design, photography, and technology. For example, the design of displays and screens involves precise control of the colours produced by mixing different wavelengths of light.
Conclusion:
The visible light spectrum is composed of various colours, each corresponding to a specific range of wavelengths and frequencies. The concept of narrow bands within the spectrum explains why we perceive distinct colours and provides a foundation for understanding the behaviour of light. This knowledge is essential not only for physics but also for a wide range of practical applications that involve light and colour.
Looking for a more dynamic learning experience?
Explore our engaging video lessons and interactive animations that GoPhysics has to offer – your gateway to an immersive physics education!
