By June of 2010 the GDP of the U.S. had recovered to a few percent higher that it was in the first quarter of 2007, while employment was five percent lower than it was in that first quarter. Why?
USA Today Magazine March 2011.
By A. DeVolpi, G.E. Marsh, T.A. Postol, and G.S. Stanford.
Born Secret looks at the widely publicized Progressive magazine case and the U.S. governmentâ€™s then unprecedented attempt to prevent publication of an H-bomb design culled by a journalist from unclassified materials. The book, originally published by Pergamon Press in 1981, has long been out of print and the authors have decided to make it available to the general public and those having an interest in the Atomic Energy Act and the First Amendment. After the court proceedings ended, the authors also donated a copy of the complete unclassified in camera file to the University of Chicago Libraries.
The file is a PDF of approximately 300MB. To download, click here.
The following 6.5 MB file has been reformatted and corrected. Born Secret-Reformated with corrections-updates
Plane electromagnetic and gravitational waves interact with particles in such a way as to cause them to oscillate not only in the transverse direction but also along the direction of propagation. The electromagnetic case is usually shown by use of the Hamilton-Jacobi equation and the gravitational by a transformation to a local inertial frame. Here, the covariant Lorentz force equation and the second order equation of geodesic deviation followed by the introduction of a local inertial frame are respectively used. It is often said that there is an analogy between the motion of charged particles in the field of an electromagnetic wave and the motion of test particles in the field of a gravitational wave. This analogy is examined and found to be rather limited. It is also shown that a simple special relativistic relation leads to an integral of the motion, characteristic of plane waves, that is satisfied in both cases.
Canadian Journal of Physics 89, 1187-1194 (2011).
If the number of nuclear weapons is to be further reduced in the future, it is important that they be deployed in a survivable mode if their reduction is not to lead to an increased probability of use. Reducing nuclear force levels can lead to instability in a time of crisis.
The following letter was published in the June 5/June 6 2010 UK edition of the Financial Times:
“UK must keep to sea-based deterrent
The possibility was recently reported by James Blitz (‘Nuclear warhead total revealed’, May 27) – with regard to the Strategic Defence and Security Review – that according to ‘Whitehall insiders’ the SDSR ‘will contain an examination of whether Britain should move to a land or air-launched deterrent’. Such a move should be rejected.
The reason is simple: a British air or land-based deterrent is not survivable. This means there is an enormous incentive to move to a launch-on-warning policy. Nuclear forces must be survivable if the probability of nuclear use is not to be increased with decreasing arsenals. For countries without strategic depth like Britain and France this means a sea-based deterrent. That is why France has already eliminated its land-based nuclear component.
If Britain is to maintain a survivable deterrent it will have to anti-up the cost for new Tridents as the existing force ages. A minimum of three is needed to maintain one in its operational area – ie, one on alert, one in transit (where it could be vulnerable), and one in dry dock.
If we are to move to a world where the number of nuclear weapons is much reduced, careful attention must be paid to force-structure.”
Slides from a talk given at the Faculty Club of the University of California, Berkeley on 29 May 2010 for A Celebration of Hugh DeWitt’s Contributions on His Eightieth Birthday .
The existing understanding of interglacial periods is that they are initiated by Milankovitch cycles enhanced by rising atmospheric carbon dioxide concentrations.Â During interglacials, global temperature is also believed to be primarily controlled by carbon dioxide concentrations, modulated by internal processes such as the Pacific Decadal Oscillation and the North Atlantic Oscillation.Â Recent Work challenges the fundamental bases of these conceptions.
Journal of Climatology, Volume 2014, Article ID 345482