Effects of the rays of Effects of the rays of radium on plants . effectsofraysofr1908gage Year: 1908 Fig. 47a. Experiment 60. Response of Chloroplasts to Radium Rajs. The sprouting of a potato was evidently not affected by having the radium tube (1,500,000 x) inserted into the tissue of the tuber about 10 mm. from the ' eye.' No effect on germination followed an exposure of dry timothy grass seed for 161 hours to the a rays from a rod coated with polonium. The thorium rays from a Welsbach gas mantle retarded the growth of timothy grass when the mantle was placed over the seeds germinating on
Effects of the rays of Effects of the rays of radium on plants . effectsofraysofr1908gage Year: 1908 Fig. 47a. Experiment 60. Response of Chloroplasts to Radium Rajs. The sprouting of a potato was evidently not affected by having the radium tube (1,500,000 x) inserted into the tissue of the tuber about 10 mm. from the ' eye.' No effect on germination followed an exposure of dry timothy grass seed for 161 hours to the a rays from a rod coated with polonium. The thorium rays from a Welsbach gas mantle retarded the growth of timothy grass when the mantle was placed over the seeds germinating on the surface of soil, but germination and growth did not appear to be affected in the least by burying the mantle in the soil.
Size: 1343px × 1490px
Photo credit: © Bookend / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage
