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2 itemsStep table with spiral design
- 1911 (Original design)
- Circa 1957 (Date attributed to slide)
Graphic representation of the periodic table of chemical elements as a spiral with varying sizes of revolutions. This table was originated by American geologist Benjamin Kendall Emerson (1843-1932) in 1911 and…
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2 itemsStep table consisting of helix wound on two stepwise cylinders
- 1911 (Original design)
- Circa 1957 (Date attributed to slide)
Plan and perspective views of a graphic representation of the periodic table of chemical elements as a helix wound on two stepwise cylinders. This table was originated by American geologist Benjamin Kendall Emerson…