Science Centre, KidsSTOP™ and Omni-Theatre are closed on 25 June 2018.

The Crane exhibit in KidsSTOP™'s Built Environment is under maintenance. Sorry for the inconvenience!

Please note that the Science Centre exhibitions will be closed on all Mondays except school and public holidays. Lab lessons for schools will continue as per normal on closure days. We thank you for your understanding.


Soon after the introduction of spectral analysis in the 19th century, an empirical relation for the wavelengths of spectral lines of hydrogen atoms was found (Rydberg formula). The physical reason for this relation only became clear with the introduction of a hydrogen atom model by"Niels" Bohr. While Bohr's atomic model is not quite right from today's perspective, it introduces key characteristics of quantum physics (e.g. de Broglie waves) at a level that is easily within participants reach. In the workshop, participants will use a diffraction grating to measure the wavelengths emitted by a hydrogen lamp. Through careful analysis, they will not only derive the Rydberg constant but also identify the quantum numbers (electron shells) associated with each spectral line.

motion in a circle; electric field; energy; quantum physics (energy levels, line spectra, wave-particle duality, photons); superposition (diffraction), atomic structure (energy levels; principal quantum numbers)

Delivery Type Hands On Workshop
Level JC1, JC2
Number of Pax 10 to 24
Duration 3.00 hours
Fees $20


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