Archive for the ‘Mad Science’ Category

Cube.ly 3D Printer

I went to the bi-monthly hackerspace meeting last night. They had a guy there giving a talk about an open source 3D printer that he and his company is working on. I posted photos of it on Flickr. The thing is called ‘Cube.ly‘ and will, once finished, print 10cc of volume per hour, cost under $1000, takes a weekend to build, and is made of off the shelf parts. The frame is made of this stuff called ‘80/20′, think adult sized Erector set and the other bits like motors are available from McMaster-Carr or the guys that build the Makerbot (electronics).

Airborne Laser Testbed Successful in Lethal Intercept Experiment

Spotted this real-world application of way cool technology today:

Airborne Laser Testbed Successful in Lethal Intercept ExperimentFeb. 11, 2010 – At 8:44 p.m. (PST)
A short-range threat-representative ballistic missile was launched from an at-sea mobile launch platform. Within seconds, the ALTB used onboard sensors to detect the boosting missile and used a low-energy laser to track the target. The ALTB then fired a second low-energy laser to measure and compensate for atmospheric disturbance. Finally, the ALTB fired its megawatt-class High Energy Laser, heating the boosting ballistic missile to critical structural failure. The entire engagement occurred within two minutes of the target missile launch, while its rocket motors were still thrusting.

[via Launch-Alert mailing list]
Airborne Laser Testbed Media Gallery

Soviet Star Wars

Not that the proliferation of weapons in space (or other places for that matter) is something to ever wish for but you have to admit that the idea has a ‘Buck Rogers’ kind of coolness to it.

“…a massive satellite, the largest ever launched, equipped with a powerful laser to take out the American anti-missile shield in advance of a Soviet first strike. It was real, though—or at least the plan was… …[The Soviets] funded two massive R&D studies in the late 1970s and early 1980s to explore how to counter imaginary American missile defense ideas,” he says. Two concepts emerged: Skif—a laser “cannon” in orbit—and another weapon known as Kaskad (Cascade), designed to destroy an enemy’s satellites with missiles fired from another craft in orbit.”

Soviet Star Wars

Bigshot: Focus on Cool!

I can only hope that this eventually makes it into the regular market:

A camera designed for kids can be much more than just a toy: it can serve as a powerful educational medium.  We believe that such an educational camera must have a radically different design from that of a typical consumer camera.   (a) It should be designed as a kit for assembly by students.  The assembly process should not only demystify the workings of the camera, but also expose students to various science and engineering concepts.  (b) It should include features that cannot be found in other cameras, allowing students to explore new creative dimensions.   (c) It should be low-cost, with the potential to serve as the basis for a scalable social venture.  Bigshot has been designed with these goals in mind.

The killer is the rotating lens board on the front. The lens wheel (or polyoptic wheel as it’s called)has three settings: normal, panoramic, and stereo. Normal is what you would think  it is, normal photo. The panoramic lens gives you a 72 degree field of view and creates a nice barrel distortion, and the stereo is a small prism that acts as a beam splitter to shoot a left and right image onto the sensor.Software that comes with the camera will adjust the distortion from the pano lens and create red/blue anaglyph stereo images when you use the beam splitter. Oh, did I mention that the camera can be powered by either a single AA battery or a few cranks on the built in dynamo?

[via MAKE]

Bigshot: A Camera for Education.

FUTUREPICTURE: Light Field Camera Project

Multi camera madness to be sure…

So, what does this thing do? The primary function of this array is to capture the Light Field, a four-dimensional function that is capable of describing all rays in a scene. Surrounding you, now, and always, is a reverberating volume of light. Just as sound echoes around a room in complex ways, bouncing from every surface, so does light, creating a structured volume. Traditional, single-lens cameras project this three dimensional world of reflected light onto a two dimensional sensor, tossing out the 3D information in the process, and capturing only a faint, sheared sliver of the actual light field. By taking many captures at slightly shifted locations, it is possible to capture a crude representation of the light field. The number of slices determines the resolution of capture; our 12 captures at 7cm separation is a bare minimum. What can you do with a light field? The lowest hanging fruit is computational refocusing. By computational refocusing, we mean focusing the image AFTER it is captured.

> FUTUREPICTURE

Ice Rockets Away!

Very nice, I like the part about the propellant being frozen while it’s being loaded into the motor.

Researchers are developing a new type of rocket propellant made of a frozen mixture of water and “nanoscale aluminum” powder that is more environmentally friendly than conventional propellants and could be manufactured on the moon, Mars and other water-bearing bodies.

New aluminum-water rocket propellant promising for future space missions.

« Older Entries    Newer Entries »