3D Image Projector With Frickin Lasers

3d display made with lasers 

A research firm in Japan has "developed a device that uses lasers to project real three-dimensional images in mid-air." Sounds cool, but that’s not all. It does this by exploding the air forming a brilliant white plasma. Oh yeah, now it’s mega cool!

At the demonstration, bursts of laser light were emitted 100 times per second to form shapes in the air up to 50 cm above the device. Heat from the laser caused the air to expand, producing a crackling sound that resembled a series of tiny explosions.

[via Engadget and ReBlog

AIST develops 3D image projector

Matchbox Pinhole Camera

Matchbox Pinhole Camera

This proves that you don’t need fancy equipment to build a camera. An empty roll of film, a matchbox, some electrical tape and a bit of foil is all you need to make this clever little gem. One of the coolest things is that because the format is 24mm x 24mm he gets 50 shots on a roll of 36. He also uses a plastic bit from a binder stuck through the sprocket holes to ‘click’ when the film is advanced. Every six clicks equals one frame. Perfect. I’m going to have to build one of these, maybe while I’m on my next trip.   

[via robot action boy

alspix stuff – Matchbox Pinhole

Print Your Own Rulers!

Printable rulers 

 

This is exactly what I have been looking for. I have a Moleskine notepad that I keep with me at all times and I don’t know how often I’ve needed a ruler that is marked in millimeters. One of these rulers has already been added to the collection of goodies I keep within the covers of my intrepid notebook. I think I’ll print out the color square rulers too just in case I need to take any photos that need a scale next to it. Never know when I might see a bigfoot track out in the wild.

[via Core77 Design and Lifehacker]

Quick Printable Rulers