The analysis of spectra is fundamental to our modern understanding of wave optics and colour
perception. Since spectrometers are expensive, and accurate calibration is necessary to achieve high
quality spectra, we developed a remote lab on optical spectrometry. With this tool, students can
carry out real experiments over the Internet. In this article the pros and cons of remote labs, the
physical background of optical spectrometry, and the development and use of a radiometric remote lab
for higher education are discussed. The remote lab is freely accessible to everyone at
http://virtualremotelab.net [http://virtualremotelab.net] .