Xll 
THE QUANTUM 
©HAP. 
XVIII 
The Interpretation of the Quantum 
1. The Meaning of “ Explanation ” in Physics 
2. The Quantum ..... 
3. Atomic Models ..... 
4. The New Quantum Mechanics 
s. Conclusion ...... 
Appendices : 
1. References to Books bearing on the Quantum Theory 255 
2. Table of Fundamental Physical Constants . . 257 
3. Planck’s Radiation Formula . . . . .258 
4. Quantized Elliptic Orbits ..... 259 
5. Table of Electron Groups in the Chemical Elements 263 
Author Index 
Subject Index 
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