The Zeldovich Number: A Universal Dimensionless Measure for the Electromagnetic Field
In this paper we extend the Zeldovich formula, which was originally derived for the free electromagnetic field and was interpreted as the number of photons. We show that our extended formula gives a universal dimensionless measure of the overall strength of electromagnetic fields: free fields and fi...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-08-01
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| Series: | Physics |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2624-8174/5/3/55 |