Learning objectives

This lab will help you better understand the electromagnetic spectrum by allowing you to view the spectra of the sun and several elements. In the lab, you can see how certain wavelengths correspond to specific colors of light. You can also use what you now know about the relationship between wavelength, frequency, and energy to estimate the frequencies and energies of the waves shown in the graph.

Real world application

Each element has a unique spectrum. Therefore, spectroscopy is useful because it allows us to identify unknown substances.

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Select a light source on the table below to view and analyze its spectrum. Use the STORE button to compare multiple spectra at once. Zoom in and switch between stored spectra to compare lines.

Click on the spectral
features in the graph.

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