Humans can typically see light with frequencies in the vicinity of 400–790 terahertz (THz). This range is derived from the visible light spectrum's wavelengths that a typical human eye can detect.
Understanding Human Vision and Frequency
The ability of humans to perceive light is limited to a specific range of the electromagnetic spectrum. This visible light spectrum is defined by its wavelengths, which can also be expressed in terms of frequency.
Visible Light Spectrum
- A typical human eye responds to wavelengths from approximately 380 to 750 nanometers.
- These wavelengths correspond to frequencies from about 400 to 790 THz.
- It is important to note that these boundaries are not sharply defined and may vary from person to person.
Table of Visible Light Frequencies and Wavelengths
| Property | Approximate Range |
|---|---|
| Wavelength | 380 - 750 nanometers |
| Frequency | 400 - 790 terahertz (THz) |
Individual Variation
The exact range of frequencies that a person can see may differ based on factors such as:
- Age
- Eye health
- Individual differences in perception
Therefore, while the range of 400-790 THz serves as a general guideline, it is not absolute for every individual.
