HOME

Course Chapters

Calculator Fundamentals

Mathematics Review

Basic Concepts

Advanced Concepts


Section Tests

Pre-test

Post-test


Useful Materials

Glossary


Online Calculators

Redox Calculator

Kinetics Arrhenius Calculator

Thermodynamics Calculator

Nuclear Decay Calculator

Linear Least Squares Regression

Newton's Method Equation Solver

Compressibility Calculator

Units Conversion Calculator

Nomenclature Calculator


Related Information Links

Texas Instruments Calculators

Casio Calculators

Sharp Calculators

Hewlett Packard Calculators


Credits

Contact Webmaster


Problem 1 Solution

What is the frequency of infrared radiation that has a wavelength of 1.25 x 103 nm?

Using the equation:

where:

v = frequency (in units of "per second", or s-1
c = speed of light at 3.0 x 108 m/s
= wavelength in units of nanometers (nm)

Solving for frequency, we have the equation:

To ensure that our units match, we must convert the wavelength from nanometers to meters:

1.25 x 103 nm * (1 x 10-9 meters / 1 nm) = 1.25 x 10-6 m

Now, it's just a simple "plug and chug":

v = 3.00 x 108 m s-1 / 1.25 x 10-6 m

= 2.40 x 1014 s-1 or 2.40 x 1014 s-1 hertz (Hz)