|“||If you set off cold fusion bombs your going to kill everyone from here to Houston.||”|
Cold fusion weapons were nuclear arms developed by incorporating alien technology to trigger a fusion reaction that resulted in the release of massive amounts of energy. None of the devices seen in Independence Day: Resurgence were mounted on missiles, instead requiring delivery by a bomber.
By incorporating low energy nuclear reactions, it is presumed that the initiation of the chain is more streamlined than in the fission reaction required to trigger both classic atomic and thermonuclear bombs. The weapon's blast radio is wide enough to cover an area extending from Lincoln County, Nevada (home to Area 51) to Houston, Texas (1,516.4 miles) and enough force to obliterate a massive alien ship known as the Queen's ship.
The concept of cold fusion or LERN was first posited during the 1980s, when excess heat was reported in experiments involving the transmutation of the elements nickel and hydrogen into cooper. However, a series of failed replications resulted in it being discarded by physicists at large. The field underwent a revival during the 2010s, when some researchers became involved in a race for commercialization.
In terms of weaponization, the concept behind cold fusion bombs is the same as in the hypothetical pure fusion weapon. The main difference being the triggering mechanism, replacing the need to start a hot fusion reaction (which involves extreme temperatures and requires expensive and large equipment to trigger, representing a series of problems for miniaturization) with an alternative that can be initiated within room temperature (reducing both costs and size).
Independence Day: ResurgenceEdit
The reaction of Joshua Adams, himself a career military man, when the use of cold fusion bombs was proposed implies that they were untested and intended to only be used as a last resort. Their first field use was during the War of 2016, when used in a retaliatory strike. However, the first attempt was neutralized when the aliens attached small devices that created an artificial shield bubble to the bombs as soon as the human vessels entered the Harvester Mothership, containing the explosions and destroying the delivery bombers. Four cold fusion bombs were then hidden in a space tug that contained a decoy replicating the signals emitted by the Sphere, fooling the Harvester Queen into allowing it entry into the Queen's ship (a large section that separated from the mothership). Once there, the bombs were manually detonated by Thomas Whitmore, succeeding in destroying the ship but not the Harvester Queen, who was wearing her own shielding device.