What are the highest visible frequencies?

Here are the 7 from shortest to longest wavelength.

Electromagnetic spectrum Type of waveFrequency rangeWavelength RangeRadio Waves300 GHz to as low as 3 kHz,1 millimeter to 100 kilometersMicrowaves(0.3 to 300) GHz1 mm to 1 mInfrared300 GHZ to 430 THzVisible Light(430–790 THz390 to 700 nmElectromagnetic spectrum – Art of Problem Solving artofproblemsolving.com › wiki › index.php › Electromagnetic_spectrum

Frequency of Light The visible light frequency is 400 THz to 700 THz , approximately. A THz is a Terahertz, which is a unit of frequency equal to one trillion Hertz. The electromagnetic spectrum. The frequency increases as we move to the right.16 Eyl 2021