n. (Military jargon) The essential workings of a nuclear or thermonuclear weapon. The "physics package" is designed by scientists at a weapons lab and comprises all the nuclear reactants used in the device
, such as plutonium, lithium deuteride, etc. The military then decides how to deploy it (missiles, bombs, backpacks).
Military weaponeer: "The B-66A is an advanced, bunker-busting, anti-raghead
weapon that is based on the Los Alamos E-1337 physics package
. The guidance system uses a special neural network code to identify and deliver the device against brown-skinned persons of the Muslim persuasion..."
Dick Cheney: (Evil grin) "We're pleased with your rapid progress. The so-called "Ramadan" starts next month!"
The nuclear components that comprise the core of a nuclear weapon; as opposed to the non-nuclear components.
The combination of fissile uranium/plutonium, fusion fuel, high explosive lenses, tampers, and x-ray reflecting materials would be considered the 'physics package'. Other components of a weapon, such as guidance systems, triggers, and motors or engines would not.
I want you to open up this Tomahawk missile, so we can see what's gone wrong. But don't touch the physics package!