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Gratefulmom (Member Profile)

Cleaning Historic White Marble with a 1000W Laser

Asmo says...

One wonders, however, if it's strong enough to clean the asshole off BK33... \= |

@Payback, there was another video recently of the rustcleaner where the operator put their finger under the beam actively cleaning rust with no obvious ill effects. Not sure how/why that happens but I didn't see smoke or BBQ so it seems pretty flesh safe.

newtboy said:

Awesome. First rust off metal, now filth off stone.

Project Blue Beam Whale Hologram in School Gymnasium

FlowersInHisHair says...

Yeah, no, a CG whale comped into a shot of a non-responding audience isn't a hologram. The video linked in Gratefulmom's comment is just AR, not a hologram - they're looking at themselves in a video monitor that's got CG animals overlaid on the feed. And the Vancouver Expo video is probably an example of the Pepper's ghost illusion, like the recent "hologram" of 2Pac, rather than actually holographic.

And good call on the "Project Blue Beam" bullshit.

Vancouver - Expo 86 - Part III- GM Holographic Exhibit

Project Blue Beam Whale Hologram in School Gymnasium

newtboy says...

Sadly I'm going to have to call 'fake'.

First, "project blue beam" is a conspiracy theory idea that claims things like the planes that flew into the twin towers were really holograms, or that there's an alien invasion program creating odd holographic images to confuse humans, or aliens are using holograms to present us with a false messiah/Jesus/Gawd/4 horsemen of the apocalypse. Uh...yeah.
Second, I notice that only a single person in the background audience has a reaction that might be attributed to seeing a whale jump at you, the rest just clap casually.
Third, there are many clear artifacts at the whale's edge where they photoshopped it in.

I wish holograms were at this level today, and they should be, but they aren't. Projecting white into a bright 3D space doesn't work without smoke or mist to project on, and even then it's only really visible when the surroundings are darker.

Tailgater vs Brake Checker

eric3579 says...

I think it's lame to argue for either driver being in the right.

A good driver being tailgated in this situation would wait till they could safely merge to the slow lane, do so, letting the tailgater pass safely. Brake checking (which I assume it is) shows incompetence behind the wheel.

The tailgater should not be tailgating. Always leave enough room for any emergency situation. If you must alert the driver in front of you that you would like to pass then a high beam flicker should hopefully do the trick. If not, suck it up, and deal with it like a reasonable driver. Don't be a dick head on the road.

This accident only happened, because there was a two for two, in the shit driving department. ALWAYS choose to be the bigger man/women on the road. Someones life may depend on it.

The Trouble with Transporters

00Scud00 says...

Wait, so after I beam from one place to another I'm considered to be dead? I calmly set my phaser to "Vaporize Silly Motherfuckers" (yes, I added a new setting) and proceed to kill the guy who just told me this. Now you see that? That's dead.

notarobot (Member Profile)

TV hosts not composed during interview with robbery heroes

Aussie blokes thwart thieves during robbery

People are insane! (2015)

worthwords says...

eek. climbing up a tall structure is understandable but holding on with one hand or doing hand jump hand stands on a beam. No one is ever going to say 'he died doing what he loved'

Tesla autopilot saves the day

Payback says...

I wonder if you can program Autopilot so when this happens, it will slam on the horn, hit the high beams and remotely hack the other car to make it crash into a tree.

Smarter Every Day - You won't believe your eyes

dannym3141 says...

I've always said the word genius is bandied around way too much, and this video is a fine example. CRT screens/tvs follow the same idea - individual lights illuminate in sequence quickly enough to form a static picture, each pixel changes very slightly 100 times per second (refresh rate) to give the illusion of the original picture in motion. The CRT beam scans ("rasters") from top left to bottom right (for example) in exactly the same way that the device in the video spins (it rasters in a circle) and however many times it spins per second is the refresh rate.

It's a cool project and his PCB work is nice, and he's done a good job of translating a picture into a timed set of lights. The videographer uses the term genius because he was not previously aware of the long history of rasters. This would be a useful tool for teaching children about the process - CRTs might not be popular anymore, but CCDs are fundamental to (astro)physics, and the principles behind both cover a huge range of potential teaching topics.

The NEW X-Files "The Truth Is Still Out There"

CERN is bringing in demons



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