The first nuclear devices looked somewhat like this, with the inner plutonium sphere (called a "pit") surrounded by explosives and their detonators. The arrangement of hexagons and pentagons is like that of a soccer ball.(Source image via Wikimedia Commons.) |

Fig. 1 of US Patent No. 3,040,660, "Electric Initiator With Exploding Bridge Wire," by Lawrence H. Johnston, June 26, 1962.(Reformatted to fit page, via Google Patents.[1]) |

"For neurons, we have shown that the slow nature of these interactions encouraged 'asynchrony,' or firing at different parts of the cycle... In these seizure-like states, the slow dynamics that couple the neurons together are such that they encourage the neurons to fire all out of phase with each other."[8]The mathematical model may also explain complex oscillations involved in predator-prey systems. When foxes prey on rabbits, and wolves prey on sheep, there will be oscillatory behavior in the fox-rabbit and wolf-sheep populations. When another variable is added, such as availability of the common food supply for the rabbits and sheep, these oscillating populations will couple with each other.[8] This work was supported by the National Science Foundation.[8]

- Lawrence H. Johnston, "Electric Initiator With Exploding Bridge Wire," US Patent No. 3,040,660, June 26, 1962.
- Alvarez was cited by the Nobel Committee "for his decisive contributions to elementary particle physics, in particular the discovery of a large number of resonance states, made possible through his development of the technique of using hydrogen bubble chamber and data analysis."
- M. Nijhoff, Ed., "Ouevres Completes de Christian Huygens," (Societe Hollandaise des Sciences, The Hague, The Netherlands, 1893), vol. 5, p. 247 (in French).
- Erica Klarreich, "Huygens's Clocks Revisited," American Scientist, vol. 90, no. 4 (July-August 2002).
- Matthew Bennett, Michael F. Schatz, Heidi Rockwood and Kurt Wiesenfeld, "Huygens's clocks," Proc. R. Soc. Lond. A, vol. 458, (March 8, 2002), pp. 563-579.
- Erica Klarreich, "Discovery of Coupled Oscillation Put 17th-Century Scientist Ahead of his Time," SIAM News, vol. 35, no. 8, October, 2002.
- Jonathan J. Rubin, Jonathan E. Rubin and G. Bard Ermentrout, "Analysis of Synchronization in a Slowly Changing Environment: How Slow Coupling Becomes Fast Weak Coupling," Physical Review Letters, vol. 110, no. 20 (May 17, 2013), Document No. 204101 (5 pages).
- B. Rose Huber, "Pendulum Swings Back on 350-Year-Old Mathematical Mystery, University of Pittsburgh Press Release, June 10, 2013.