File:PSM V74 D233 Thorium radioactive incandescent gas mantle placed above plant seeds.png
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Summary
[edit]DescriptionPSM V74 D233 Thorium radioactive incandescent gas mantle placed above plant seeds.png |
English: Thorium radioactive incandescent gas mantle placed above plant seeds |
Date | |
Source | Popular Science Monthly Volume 74 (January to June 1909), Page 229, Fig. 8. |
Author | Unknown authorUnknown author |
Experiment on the effect of radiation (from unburned thorium gas mantle) on the germination and growth of timothy grass seed.
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[edit]Public domainPublic domainfalsefalse |
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