Imagine you’re in charge of a major heist. Right as your crew is about to rob the main vault, you need all of the electronics in the building to fail at exactly the right moment with no other collateral damage (except, maybe, to your raggedy panel van). Obviously you will turn to one of the entertainment industry’s tired tropes, the electromagnetic pulse! The only problem is that if you were to use a real one rather than a Hollywood prop either there would be practically no effect, a large crater where the vault used to be, or most of humanity would be in deep trouble. After all, the real world isn’t quite as convenient as the movies make it seem.
Our curiosity into this phenomenon was piqued when we featured an “EMP generator” from [FPS Weapons]. The device doesn’t create an enrapturing movie-esque EMP pulse suitable for taking down a casino or two, but it does spew a healthy amount of broadband electromagnetic interference (EMI) in every direction. It probably also doesn’t send the EMI very far; as we’ve seen in many other projects, it’s hard to transfer energy through the air. It got us wondering, though: what is the difference between being annoying and creating a weapon? And, is there any practical use for a device like this?
Continue reading “Electromagnetic Pulse: Pure Hollywood?”
Suspension bridges are far and away the target of choice in America’s action blockbusters. In just the past three years, the Golden Gate Bridge has been destroyed by a Kaiju, Godzilla, a Skynet-initiated nuclear blast, and a tsunami. Americans don’t build real bridges anymore, or maintain the ones that we have, but we sure love to blow them up in movies.
There is logic here: A disaster scene involving a famous bridge serves both to root the film in the real world and to demonstrate the enormity and the immediacy of the threat. The unmaking of these huge structures shocks us because many bridges have gained an aura of permanence in our collective consciousness. Although we know when the Brooklyn Bridge was built and who built it, we feel like it has always been there and always will be. The destruction of our familiar human topography is even more disturbing than the deaths of the CGI victims, and I’m not just saying that as a misanthrope who loves bridges.
However, in all of the planning, storyboarding, rendering, and compositing of these special effects shots, nobody pauses to consider how suspension bridges actually behave. I can accept messianic alien orphan superheroes and skyscraper-sized battle robots, but I will not stand for inaccurate portrayals of structural mechanics. It’s fine to bend the laws of physics if the plot warrants it, but most suspension bridge mistakes are so needless and stupid that their only function seems to be irritating engineers.
Continue reading “Suspension Bridges of Disbelief”
Back in June when Hackaday attended LA Tech Day I met [Gray Bright]. He’s been a big fan of Hackaday for years and recently started producing and hosting The Tomorrow Show, a Late Night Talk Show focused on Science and Technology. [Gray] invited me on the show to talk about Hackaday and the 2015 Hackaday Prize.
[Gray’s] approach is to view scientists and engineers as the new rock stars. In each episode he invites some of the biggest names from the worlds of Science, Technology, Engineering, Art, and Mathematics (STEAM) and conducts a thought-provoking and entertaining interview. There’s a healthy dose of comedy from future correspondent [Ant Simpson] and [SupernoVanGirl], live musical performances, and it’s all filmed in front of a live studio audience.
Filming the show in the Hollywood studio on a Friday night in July was a hoot. I was honored that our segment was on the same episode as the legendary engineer and entrepreneur [Nolan Bushnell], founder of Atari and Chuck E. Cheese’s. [Nolan] even did an impromptu standup set when there was a short technical delay.
You can watch the full episode (below the fold) to see antics from The Tomorrow Show team, [Nolan’s] anecdotes about the early days of Atari and being [Steve Jobs’] boss, as well as my first TV appearance spreading the word about the Hackaday Prize. It’s also hilarious to see [Nolan] hooked up via electrodes controlling [Gray] to play Brain Pong just like when we toured Backyard Brains last year.
Continue reading “Nolan Bushnell and Hackaday on the Latest Episode of The Tomorrow Show”
If you know anything about how films are made then you have probably heard about the “green screen” before. The technique is also known as chroma key compositing, and it’s generally used to merge two images or videos together based on color hues. Usually you see an actor filmed in front of a green background. Using video editing software, the editor can then replace that specific green color with another video clip. This makes it look like the actor is in a completely different environment.
It’s no surprise that with computers, this is a very simple task. Any basic video editing software will include a chroma key function, but have you ever wondered how this was accomplished before computers made it so simple? [Tom Scott] posted a video to explain exactly that.
In the early days of film, the studio could film the actor against an entirely black background. Then, they would copy the film over and over using higher and higher contrasts until they end up with a black background, and a white silhouette of the actor. This film could be used as a matte. Working with an optical printer, the studio could then perform a double exposure to combine film of a background with the film of the actor. You can imagine that this was a much more cumbersome process than making a few mouse clicks.
For the green screen effect, studios could actually use specialized optical filters. They could apply one filter that would ignore a specific wavelength of the color green. Then they could film the actor using that filter. The resulting matte could then be combined with the footage of the actor and the background film using the optical printer. It’s very similar to the older style with the black background.
Electronic analog video has some other interesting tricks to perform the same basic effect. [Tom] explains that the analog signal contained information about the various colors that needed to be displayed on the screen. Electronic circuits were built that could watch for a specific color (green) and replace the signal with one from the background video. Studios even went so far as to record both the actor and a model simultaneously, using two cameras that were mechanically linked together to make the same movements. The signals could then be run through this special circuit and the combined image recorded all simultaneously.
There are a few other examples in the video, and the effects that [Tom] uses to describe these old techniques go a long way to help understand the concepts. It’s crazy to think of how complicated this process can be, when nowadays we can do it in minutes with the computers we already have in our homes. Continue reading “How Green Screen Worked Before Computers”
Ah, CSI. What other television show could present digital forensics with such two-bit dialogue?
It’s time once again to put on your hacker hats – a red fedora, we guess – and tell us the worst hacker dialogue you’ve seen in movies or TV. We’ve seen a ton of shows and movies where writers and directors spend zero time doing any sort of research in whatever technology they’d like to show off in the story they’re trying to convey. Usually this results in lines like, “I’ll create a GUI interface using Visual Basic. See if I can track an IP address.” It’s technobabble at its best, and horribly misinformed at its worst.
We’re wondering what you, the readers of Hackaday, think are the worst examples of hacker lingo fails. Anything from, ‘Enhance!’ to the frightening real-life quote, “the Internet is not a big truck. It’s a series of tubes.”
We’ll compile your suggestions in a later post, but I’m betting something from Star Trek: Voyager will make the #1 technobabble/hacking lingo fails. There’s just too much in that show that isn’t internally consistent and doesn’t pay any heed to the laws of (fictional) physics. Warp 10, I’m looking at you. Of course there was the wonderful Habbo reference in last week’s Doctor Who, but I’m betting that was intentional as [Moffat] seems pretty up to speed on the tropes and memes of the Interwebs.
About a month ago, we asked you for your take on the worst hacking scenes ever shown on TV or film. The results made for good viewing, albeit with a surprising absence of Lawnmower Man. Now we want some dialogue to go with these horrendous hacking scenes. So, what say you, Hackaday? What are the worst hacking lingo fails you’ve seen or heard? Please be specific about what movie/TV show you’re referencing. Last time some good stuff probably slipped by because people just said a few words without context assuming we’d know exactly what they were referring to.
It’s time to do your best impression of [Comic Book Guy] as you make your case for trash or triumph in big screen hacking scenes. We watch a lot of movies, and it’s hard not to groan when the filmmakers cut corners by doing zero research into what using a computer actually looks like. But then once in a great while you have a team that does its due diligence and puts up a scene that makes sense to those of us in the know. So we’re wondering, what movies do you think have the best hacking scenes, and which ones are the worst offenders? Leave your opinion on the topic in the comments section.
We realize that you can come up with tons of poorly done ones, what we would really like to hear about is who did it right. We’ll get you started with a couple of examples. The image on the upper left is a scene from Tron: Legacy which we think did a fantastic job of portraying actual computer usage. You can read more about the huge amount of work that went into it in this article (via Reddit).
In the lower right is one of the most shady movies scenes that comes to mind. [Hugh Jackman] is compelled to do some ‘hacking’ by [John Travolta] in the movie Swordfish. The caption at the top of the screen is “COMPILER”, and who the heck knows what the rest of that is supposed to be?
On the hardware hacking side, it gets a little more difficult, we would LOVE some examples of hardware hacks or mods done right.
We generated the screen full of code seen above literally by bashing a hand on the keyboard repeatedly like a monkey. You know, just like how hackers are portrayed in the movies? Hacker Typer makes you look like you know what you’re doing even though you’re too lazy to do something real. It’s a pointless website that’s none-the-less worth a few moments of your time just for the sake of amusement. You’ll be greeted with a set of options. The first lets you decide what pre-determined text will appear as you type. The rest are for page title, foreground and background colors, and number of characters that will appear with each keystroke.
The default features start off with three characters generated for each keystroke, another annoying staple of Hollywood film making. Oh well, even movies that try really hard to get things right end up getting under the skin of someone. Case in point, the Linux shell readout from Tron Legacy.
[via The Presurfer]