JF Ptak Science Books Post 2763
While looking for an article on the imaginary gatekeepers of Martian canals in The Electrical Experimenter (1915) I found this illustration for a piece of speculative military tech (first image, below). The annoyingly-capitalized caption states this to be an “Electro Magnetc” gun 90′ long and rapid-firing 19-inch (480mm) HE. I guess they were somewhere along the very early reaches for the idea of what would become the contemporary EM rail gun being developed by the U.S. Navy. The power source for the gun shown above is not quite what the Navy has developed, as they employ something along the lines of a multi-million ampere pulsed DC power supply that creates the conductance to launch a shell with a muzzle velocity of 3500 m/s. At this point you don’t need explosives to cause damage at the other end–you just need a projectile. The 1915 version is far offline, except for the initial idea, which is a good one. Besides the shortcomings in the implementation realm of this weapon the writer here doesn’t have a very long vision for the future of warfare, saying that his cannon would be devastating to “forts”. This idea I thought was certainly quaint when written given that WWI was already into its second year, and unless by “forts” the writer meant “trenches”, this visioneer was very visioneering.
[Image source: https://archive.org/details/electricalexperi03gern/page/350 Click to expand for a clearer image.]
Massive, monster cannons have existed for many years in idealized and theoretical, speculative worlds, like Tom Swift and his Monster Cannon. In the history of early imaginary big guns H.G. Wells’ Babel-like cannon (pictured below in a still from the movie Things to Come (1936), an adaptation his The Shape of Tings to Come from 1931) is monumentally fabulous –1500 feet tall, with what looks like a 750′ base, all of which launched a 75′ tall capsule beyond the Earth’s
gravitational pull with a spectacular explosiveness that would’ve made its occupants into instant jelly. Tangentally-speaking here the launching of an object to escape the Earth’s gravity didn’t occur until 1946 when the highly-problematic but nevertheless-genius Fritz Zwicky fashioned a device to an experimental V-2 and via an electric explosive charge punched some object into space.