Science Centre Singapore and KidsSTOP™ are closed on 17 & 24 Feb 2020.

Omni-Theatre is closed for upgrading works from 17 Feb to 20 Mar 2020.

Please note that exhibition gallery halls will be closed on Mondays except school and public holidays. Lab lessons for schools will continue as per normal on these 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. Bohr's atomic model introduces key characteristics of quantum physics (e.g. de Broglie waves) at a level that is easy for students to comprehend.

In the workshop, students 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, ITE, Poly
Number of Pax 10 to 30
Duration 3.00 hours
Timing 9.30am, 2.30pm
Fees $20

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