A place for insight, inspiration, and experiments.
Vernier offers more than 1,000 experiments in biology, chemistry, engineering/robotics, and physics that can help you inspire students and integrate data-collection technology into your STEM classes.
All three of this month’s featured experiments involve our spectrometers. To further explore the use of spectrometers, check out our Illuminate Spectroscopy webinar.
- Determine and analyze the visible light absorbance spectrum of spinach extract.
- Determine and analyze the fluorescence spectrum of the same spinach extract sample.
- Develop and investigate a researchable question dealing with visible light spectra and/or fluorescence spectra of plant pigments.
- Measure the absorbance spectrum of riboflavin to determine the best wavelength for fluorescence excitation.
- Observe fluorescence of vitamin B2 in energy drinks.
- Measure a fluorescence calibration curve of vitamin B2 standards.
- Calculate the concentration of vitamin B2 in energy drinks.
- Compare measurements to stated concentration to determine accuracy.
In this experiment, students use the Go Direct Emissions Spectrometer and other equipment to
- Determine the wavelengths of the emission lines in the visible spectrum of excited hydrogen gas.
- Determine the energies of the photons corresponding to each of these wavelengths.
- Use a modified version of Balmer’s equation to relate the photons’ energies to specific transitions between energy levels.
- Use their data and the values for the electron transitions to determine a value for Rydberg’s constant for hydrogen.
Share this Article
Sign up for The Caliper
The Caliper newsletter is published monthly and covers urgent topics in STEM and education.