0
What is frequency of red light with wavelength of 690 nanometers?
Wiki User
∙ 11y ago
- speed of light in meters per second / wavelength in meters = frequency in Hz
- 299 792 458m/s / 0.000000690m = 434481823188406Hz = 434481823188.4KHz =434481823.2MHz = 434481.8GHZ = 434.5THz
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
How long a distance colors in light reach are measured in?
If the question is "What measures of distance are used with (visible) light?" Light is normally measured either in Angstroms, which are ten-billionths of a meter, or, more commonly today, in nanometers, which are one-billionths of a meter. Red light is around 700-690 nanometers (some claim all the way to 760 nm) and the wavelengths get shorter as the colors get "cooler" (that's psychologically cooler; they are actually getting more energetic). Around 400-390 nm they slip into the ultraviolet and we can no longer see them.
689 rounded to the nearest ten?
690
What is 85 percent of 690?
85 percent of 690 = 586.5 85% of 690 = 85% * 690 = 85%/100% * 690 = 0.85 * 690 = 586.5
What is 688 rounded to the nearest ten?
690
What is 692 rounded to the nearest ten?
690
What is 23x30?
The product is 690
What is 691 to the nearest 10?
690
What is 4140 divided by 6?
690
What is 87-690?
87-690 = -603
What is 685 to the nearest ten?
690
what is the nerest number for 690?
If you want to round 690 to hundreds the answer is 700 but with tens then 690 still
What is 23 times 30?
23 x 30 = 690
