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This two-lobed, or "propeller"-shaped, electron probability density distribution characterizes an atom in the state: n=3, l=3, m=-2. For this state there are no jets or disks at the "waist". |
Above is a photograph of the planetary nebula called M1-92. |
This is a schematic drawing of the planetary nebula NGC 6826. It is inferred to have a symmetric "propeller" shape, without much structure in the "waist" region. |
Source:H.E. White, Physical Review, vol. 37, pg. 1419, 1931. |
Source:Planetary Nebulae, Proceedings of the 180th Symposium of the IAU (8/26-8/30, 1996), ed. By H.J. Habing and H.J.G.L.M. Lamers, Kluwer, Dordrecht, 1996, Figure 1, pg. 370. |
Source:Ronald Weinberger, in Planetary Nebulae, Proceedings of the 131st Symposium of the IAU, ed. By Silvia Torres-Peimbert, pp. 93- 103, Kluwer, Drodrecht, 1989 (Fig. 1, pg. 95). |
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