What is the frequency of this radiation?

An argon ion laser emits light at 489nm. What is the frequency of this radiation? Is the emission in the visible spectrum? If yes, what color is it?What is the frequency of this radiation?
frequency = c/wavelength



here c is the speed of light in vacuum, a constant (3*10^8 m/s). Now, don't forget to convert nm to m before you do the calculations! Also, remember that the SI unit of frequency is Hz (1/s).What is the frequency of this radiation?
Check the following web pages and find out yourself:



http://imagine.gsfc.nasa.gov/docs/scienc鈥?/a>

http://imagine.gsfc.nasa.gov/docs/scienc鈥?/a>

north beach plantation

college books