Last night when I got too tired to do anything productive I made a histogram, (shown in picture 2 below), using Google Scholar data of the number of citations containing the phrase 'twin paradox' over the years. The first reference I found to the twin paradox was in 1956. Prior to that it seems to have gone by the moniker of "Clock Paradox". As I perused through the references, (there were a total of 2,393 between 1956 and 2013 by the way), one caught my eye because it was published by the U.S. Naval Research Laboratory in 1959. As I've mentioned before, their was a push for anti-gravity in the late '50s and early '60s.
The document turned out to be a bibliography compiled by Mildred Benton, (picture 1 above), of the library branch of the technical information division. Mildred served as the librarian at the Navy's Ruth H. Hooker library between 1951 and 1954. This in and of itself looks really interesting. Ruth Hooker was a physicist and judging from the bibliography it looks like Mildred Benton may have known more than a little physics herself. But I'm digressing into a whole other post here :)
"Anything that can be postulated is possible, says science - including timelessness.Now that should get the kids... pssht, actually just about anybody interested!
The latest table-talk among the rocket and missile men has to do with the physics (and meta-physics) of photon propulsion: thrust for a space vehicle derived by shooting incredibly concentrated beams of light (photons) from its tail. Result - speeds approaching that of light! Round trips to distant galaxies could thus be accomplished in a single generation of the crew. Meanwhile, however, the Earth would have passed through a billion years - possibly into cosmic oblivion!
The space-time is increasingly a factor in the calculations of a brand new field of science known as astronautics... Work in this field at Martin is already at the threshold of tomorrow."
Here are the few references I mentioned above.
Purports to be the first experimental verificaiton of time dilation. High speed 'mesotrons', (now known as muons), are seen to have a longer lifetime before they decay.
"189. Rossi, Bruno; Hilberry, Norman and Hoag, J.B. THE VARIATION OF THE HARD COMPONENT OF COSMIC RAYS WITH HEIGHT AND THE DISINTEGRATION OF MESOTRONS. Phys.Rev. 57:461-469,Mar.15,1940.
F.S. Crawford (See Item 45) states that the first quantitative check of the assumption that the time dilation of special relativity holds for uniform motion is contained in the combined experiments of Rossi, Hilberry and Hoag; Rasetti; and Blackett (See also Items 184 and 14)."
This one may be applicable to my work at the moment. We're trying to determine the spacetime metric of an infinite sheet of constant density matter.
"160. Marder, L. ON UNIFORM. ACCELERATION IN SPHERICAL AND GENERAL RELATIVITY; COMMUNICATED BY H. BONDI. Camb.Phil.Soc.Proc. 53:194-198, Jan.1957.
Various definitions of uniform acceleration are possible in relativity theory. Two of these are considered with particular reference to their physical realizations."
Minguzzi E. (2005). Differential aging from acceleration: An explicit formula, American Journal of Physics, 73 (9) 876. DOI: 10.1119/1.1924490
1.a. Open Access version
E. Minguzzi (2004). Differential aging from acceleration, an explicit formula, Am.J.Phys. 73 (2005) 876-880, arXiv: physics/0411233v1
Schild A. (1959). The Clock Paradox in Relativity Theory, The American Mathematical Monthly, 66 (1) 1. DOI: 10.2307/2309916
3. U.S. Navy Twin Paradox Bibliography
4. Ruth H. Hooker Research Library
5. Also by Mildred Benton
6. Mildred Benton historical image
7. Popular Science article, (open access)
8. References from Copasetic Flows regarding the push for anti-grav in the '50s