Hopes are not yet dashed, but they clearly have taken a body blow:
A pair of researchers from the Ludwig Maximilian University of Munich, and the University of Otago have carried out theoretical modelling in an attempt to understand how an invisibility cloak might actually work in real life. There are different ways to make invisibility cloaks, all of which have to contend with the fact that diverting light around something introduces time delay problems — because the light can’t pass straight through the object that’s being cloaked.
The most realistic way to do it using an “amplitude cloak.” This approach discards information about the phase of light, instead recreating its color and attempting to introduce a time delay to make up for the differences in path length along which the light travels. The good news is that the cloaks create a compelling representation of reality. In fact, labs have already been able to show off amplitude cloaks that kind of work.
But the new research brings some bad news, too. Sadly, it seems this kind of cloak would only work when the hidden object and its observer are stationary. The reason is to do with something known as Fresnel-Fizeau drag. When light propagates through a moving medium — like, say, a raindrop — it is dragged along with the medium. So a moving invisibility cloak — or a moving observer — would drag light with it.
Potions, anyone?No comments
If you liked Disney’s Invisible Sister but wanted more of the early scenes with Paris Berelc as an empty space, Disney Channel UK has something for you:
Who knows what other scenes might still be in the Mouse’s vault?No comments
The Nick Jr. series Little Charmers has had one episode that addresses invisibility: “Invisible Smiles” hinges on Hazel’s attempt to improve her appearance before a fashion show, and how she solves the problem with a lot of sparkly glitter, or maybe it’s glittery sparkle. It’s only a couple of minutes long, and it’s a fair amount of fun for the youngsters at whom it’s aimed.No comments
Now here’s a description:
I could feel everything, including my own face when I touched it. Meaning I wasn’t dead, exactly; the explosion of antimatter or whatever had happened at the LHC had somehow reassembled my poor annihilated atoms into a form invisible to the naked eye. And then apparently shot me up onto the nearest mountaintop. So, technically I wasn’t actually in Heaven, I was still somewhere in Switzerland.
It was like God had cursed me by making all my childhood wishes come true. I was wearing the Harry Potter Invisibility Cloak — and I was stuck on the freakin’ set of The Sound of Music!
Dr. Mira Verbogen, having survived a catastrophe at the Large Hadron Collider at CERN, discovers she’s not quite what she used to be, in The Accidental Superheroine by J. R. Rain and Kris Carey. Wild and crazy stuff.No comments
This is kind of neat. Brian Cronin at CBR has assembled, with appropriate artwork, the Top Five Greatest Invisible Woman Moments, from many years of Fantastic Four. His criteria, I think, are admirable:
In determining these rankings, I am leaning heavily on “historic” over just plain “cool.” In recent years, writers have been giving Invisible Woman more and more impressive displays of her powers. Heck, during Infinity War, Sue contained a nuclear explosion! During James Robinson’s recent run, she fought the Avengers to a standstill and almost killed Doctor Doom. So for the past twenty years or so, she has routinely done notable feats of strength. While they’re all cool, they sort of take away from the significance of each one. So I’m giving more weight to moments Sue did during periods where she was NOT as well established as a bad ass.
Sensible, given the oft-proclaimed belief that Sue Storm, early on, was primarily eye candy.
So I sat through the premiere of the Disney Channel Original Movie Invisible Sister, as mentioned previously. As suspected, it was not related to the book with the similar title, which got an “Inspired by” credit.
That said, it was actually a pretty good story in this vein, and while you expect a DCOM to have a certain quantity of “heartwarming” stuff, it never actually detracted from the plot, and the special effects were more than acceptable — though I don’t think it’s going to make a lacrosse fan of me.
The trouble with your standard present-day “invisibility cloaks” is that they’re not all that cloaky: kinda thick and inflexible, in fact. But wait:
Researchers at the University of California, San Diego, designed a carpet cloak, a device that covers an object and scatters light as if it’s hitting a flat surface instead of something three-dimensional.
The cloak is very thin only about a tenth the size of the wavelength of the photons it’s scattering and lossless, so there’s no dimming to give away the presence of the cloak. The scientists achieved this by using a new design and different materials. Instead of a periodic structure of metal, which absorbs light, they use two dielectric materials, a Teflon substrate studded with cylinders made of a ceramic. The ceramic has a high refractive index, and the Teflon has a low refractive index. When combined, they create a metamaterial, capable of bending light in unusual ways.
The finished product will of necessity be extremely thin:
It was designed for the microwave range, with a 0.6 cm thickness to handle 6 cm wavelengths, simply because those larger dimensions made it easier to work with. A cloak could be made for visible light but would have to be much thinner. Because the shortest wavelength the human eye perceives is slightly less than 400 nm, a cloak would have to be less than 40 nm thick, a dimension easily achievable by the photolithography processes used for making computer chips.
I can absolutely assure you that if I ever have a chance to test this out, I will:
First, Arvid Guterstam made himself invisible. When he looked down at his body, there was nothing there.
He could feel he was solid; he hadn’t vanished into thin air. He even felt a paint brush tickle his transparent belly, while the brush appeared to be stroking nothing but air.
Being invisible is “great fun,” Guterstam reports, “but it’s an eerie sensation. It’s hard to describe.”
Then he took off his virtual reality headset and was back in the laboratory, fully visible. Guterstam is a medical doctor and PhD student, and he had just pulled off the first fully convincing illusion of complete invisibility. He went on to test 125 other people, and reports Thursday in Scientific Reports that seven out of ten also felt the illusion, and it was realistic enough to make them feel and respond physically as if a group of people could not see them.
A few steps below, say, the Star Trek holodeck, but possibly affordable by mere mortals not so far in the future.
Invisible Sister will tell the hilarious story of a good-natured, bookish young girl named Cleo who accidentally makes her super popular sister Molly invisible after the science project she is working on gets out of control. Now Cleo has to figure out a way to turn her sister back to normal and Molly gets a powerful look at what life is like when no one sees you.
There had been some chatter to the effect that this project might have been based on the book My Invisible Sister by Beatrice Colin and Sara Pinto, but the plot synopsis as given sounds nothing like that book.1 comment
The Japanese, I am persuaded, pay far more attention to this particular, um, fantasy than we do in the States. As evidence, I present this ten-minute collage of drawings, maybe two of which I’d seen before:
[Oh, fudge. The video’s been pulled.]
(Thanks to Dale.)
Philip Ball’s Invisible: The Dangerous Allure of the Unseen, due mid-April, is an analysis of the dynamic:
If offered the chance by cloak, spell, or superpower to be invisible, who wouldn’t want to give it a try? We are drawn to the idea of stealthy voyeurism and the ability to conceal our own acts, but as desirable as it may seem, invisibility is also dangerous. It is not just an optical phenomenon, but a condition full of ethical questions. As esteemed science writer Philip Ball reveals in this book, the story of invisibility is not so much a matter of how it might be achieved but of why we want it and what we would do with it.
In this lively look at a timeless idea, Ball provides the first comprehensive history of our fascination with the unseen. This sweeping narrative moves from medieval spell books to the latest nanotechnology, from fairy tales to telecommunications, from camouflage to ghosts to the dawn of nuclear physics and the discovery of dark energy.
Ball’s book is going on my wish list.
The singer/songwriter known as Sia, on the promotion of her new album 1000 Forms of Fear:
I already have a much larger concept for this album and for how I’m going to present it and that was: I don’t want to be famous. If Amy Winehouse was a beehive then I guess I’m a blonde bob. I thought “well if that’s my brand, how can I avoid having to use my face to sell something,” so my intention was to create a blonde bob brand. Throughout this whole thing I’ll put a different person in a blonde bob and either they lip-synch while I’m doing a live performance or they perform a dance or do some sort of performance while I have my back to the audience, as with Ellen.
And in the official video for the first single, “Chandelier,” there’s a tween dancer with endless reserves of energy in a blonde bob. But there’s also a lyric video:
In case you didn’t think she was serious about it.
Author Rodd Thunderheart has finally completed his novel See Through Love (Friesen Press, 2014), which is listed as Coming Soon at the publisher’s site. Part of the blurb:
High school teacher Carolina Dominguez has the unique ability to turn invisible at will. While she usually has control over her supernatural ability, Carolina becomes invisible every time she is attracted to a man.
This will, of course, be added to my To Read list.
A couple of additions while you weren’t looking:
- 13 black sends along Pearl Andrews, vintage beauty from the Web series The True Heroines;
- Paul Cwick points to Jo McCormick, tween member of the Big Bad Beetleborgs, one of those 1990s series that combines Pacific Rim mecha footage with new stuff shot in Southern California.
Thanks to them, and to all the contributors over the years.