XXXI. On the cheapest form of light, from studies at the Allegheny Observatory.
| Autor: | Langley, S. P., Very, F. W. |
|---|---|
| Zdroj: | Philosophical Magazine Series 5; Sep1890, Vol. 30 Issue 184, p260-280, 21p |
| Databáze: | Complementary Index |
| Externí odkaz: |
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| Autor: | Langley, S. P., Very, F. W. |
|---|---|
| Zdroj: | Philosophical Magazine Series 5; Sep1890, Vol. 30 Issue 184, p260-280, 21p |
| Databáze: | Complementary Index |
| Externí odkaz: |
|