It turns out there is a reason for that. Gemini recently told me that that yellow-green (often called peridot) has a wavelength of 560nm (nanometers). Peridot is a stone that has steadily crept up my list of aspirational jewelry items, and now that it has been associated with 56…it the number one piece of physical love in my life.

Anyway, I was confused about wavelength versus frequency, and I asked Gemini to help me understand what they mean in terms of yellow-green light, as I see that as psychic energy. The technical discussion is as follows:

Asking for the frequency of a specific wavelength like 560 nm is a perfectly valid and common question in physics. In the context of the electromagnetic spectrum, light is often described by its wavelength (\lambda), but it can also be defined by its frequency (f).
Since light travels at a constant speed in a vacuum, these two values are inversely proportional: as the wavelength gets shorter, the frequency gets higher.

The Calculation
To find the frequency, we use the wave equation:
Where:
c is the speed of light (approximately 3 \times 10^8 meters per second).
lambda is the wavelength (in this case, 560 \times 10^{-9} meters).

For 560 nm, the calculation looks like this:
This is approximately 536 Terahertz (THz).

Is it a “correct” question?
The question is scientifically sound, though there are two minor nuances to keep in mind regarding your phrasing:

1. “Vibrate”: While we often use “vibrate” in casual conversation, physicists usually prefer the term oscillate. Light consists of oscillating electric and magnetic fields.

2. Color vs. Wavelength: While 560 nm is a specific physical measurement, “color” is a human perception. 560 nm falls in the **yellow-green** part of the visible spectrum.

Summary Table
| Property Value
|
| Wavelength  560 nm
| Frequency  ~536 THz
| Perceived Color  Yellow-Green |
| Photon Energy ~2.21 eV