Traversable Achronal Retrograde Domains In Spacetime is a new paper by
Caltech/Memorial Gallifrey physicists Benjamin K. Tippett and David Tsang that attempts to describe the spacetime through which Doctor Who's Tardis travels; one that "goes forward and back in time, and left and right in space." It's a bit heavy going, so they've also published The Blue Box White Paper, a lay-friendly, 17 page summary for people with "no technical knowledge of Einstein's Theory of General Relativity." The discussion continues on Tippet's Tumblr.
A person travelling within the TARDIS would describe it as a room which is constantly accelerating
forwards. Furthermore, any events which occur inside of the TARDIS bubble must satisfy Novikov’s self
consistency condition11 .
A person outside the bubble would describe an entierly different scene (see Fig. 10). Due to its closed
trajectory, there will be a time before the bubble (and its contents) exists. Abruptly, we would see a bubble
appear and split into two, the two boxes moving away from one another. Initially, they will be moving at
superluminal speeds, but they will decelerate to a stand-still. The pair of boxes will then begin accelerating
towards one another until they exceed the speed of light, merge and disappear. Mysteriously, the contents
of one bubble will be appear to evolve forwards in time, while the other will evolve backwards.
To illustrate how time is experienced inside and outside of the bubble, imagine that there are two people
in our spacetime: Amy, who is travelling inside the bubble; and Barbara, who has been left behind. Suppose
that the two women are holding large clocks, and that the walls of the bubble are transparent, so that the
two women can see one another (See Fig. 11).
Traversable Achronal Retrograde Domains In Spacetime
James Cawley is a 50 year old Elvis impersonator from Ticonderoga, NY; his friend William Ware Theiss was costume-designer for the original Star Trek series, and left Cawley the blueprints for the original Star Trek Enterprise sets in his will — so Cawley rented out a 13,000 sqft shuttered supermarket and built an exquisite replica […]
Neil Gaiman writes: “A little over a year ago I released my rarest, earliest, and hardest to find work — books and comics — through Humble Bundle to fund charities that do good work. People were all so generous and enthusiastic that we broke records. More importantly, they made it possible for the Comic Book […]
Environmental lawyer-turned-Portland City Commissioner Steve Novick has a cool use for the new SEC rules requiring companies to disclose executive pay starting in 2017: he’s going to impose special taxes on businesses where the ratio of CEO pay to median worker pay exceeds 100:1 — an increase of 10% for 100:1 companies, and 25% for […]
The Boing Boing Store’s Gift Guide is full of ideas for pretty much anyone in your life like hipster ice cub trays, Xbox controllers, Halo Boards, and even diamond necklaces. As always, all products in the Boing Boing Store come at great discounts, too. Shop by price bucket starting at under $20. Under $20:Bloxx Jumbo Ice Trays […]
Unlike traditional lighters, the SaberLight features an electronic plasma beam that’s both rechargeable and butane-free. This sleek lighter is even approved by TSA, so you’ll never be stuck buying lighters you’ll just have to throw away partially used. For some people, like me, this is a pretty big game-changer. The SaberLight’s beam is actually both hotter and cleaner […]
Holiday shopping is in full swing, and the Striiv Touch is one of the best gift ideas I’ve landed on. Its simple design works for females and males, and its wide range of features makes it suitable for even the non-fitness enthusiasts in your life.Unlike traditional fitness trackers, the Striiv Touch also acts as a smartwatch. It […]