1. This is then combined with the value of the Rydberg constant to extract ?. 2. For example, by using his model, one calculates 1 the Rydberg constant . 3. H is the Rydberg constant for hydrogen. 4. This is known as the Rydberg formula, and the Rydberg constant is, or in natural units. 5. The physical constant known as the Rydberg constant is named after him, as is the Rydberg unit. 6. On the wiki page, the Rydberg constant has both a c and h cubed in the denominator. 7. The exact value of the Rydberg constant assumes that the nucleus is infinitely massive with respect to the electron. 8. The spectrum of hydrogen can be expressed simply in terms of the Rydberg constant , using the Rydberg formula. 9. The "'Rydberg unit of energy "', symbol Ry, is closely related to the Rydberg constant . 10. This constant is now known as the Rydberg constant , and " m "'is known as the quantum defect.