从现象到验证_Balmer Series_IB DP PHYSICS+ToK
Conceptual learning
1. Phenomenon
2. history
(965 – 1039)
Arab Muslim Scientist
“Father of Optics”
Ibn Alhazen is considered the “Father of Optics” He wrote the “Book of Optics”, which correctly explained and proved the modern theory of vision. His experiments on optics greatly influenced later scientists.
3. Experiment：
four wavelengths?
410, 434, 486, 656
In the visible region, there are only four wavelengths.
4.
5. mathematican & physictist
(May 1, 1825 – March 12, 1898)
Swiss Mathematician &
Honorary Physicist
In 1885, Johann Jakob Balmer
analyzed the hydrogen spectrum and found that hydrogen emitted four bands of light within the visible spectrum. His empirical formula for the visible spectral lines of the hydrogen atom was later found to be a special case of the Rydberg formula, devised by Johannes Rydberg.
6. to calculate the frequency
7. to calculate the wavelength
8. formula
9. Verification
10.
