Showing posts with label material. Show all posts
Showing posts with label material. Show all posts

13.10.09

Reflecting on a new generation of mirrors

Non-reversing mirror

This mirror does not produce a "mirror" image, making it possible to read reflected text normally.

Hicks, a mathematician at Drexel University, Philadelphia, used computer algorithms to generate the mirror's bizarre surface, which curves and bends in different directions. The curves direct rays from an object across the mirror's face before sending them back to the viewer, flipping the conventional mirror image.

As well as neat tricks like this, Hicks' models make it possible to design mirrors that provide wide angled-views or eliminate distortion.

List of the kinds of mirrors:
Driver-side mirror
Parabolic mirror
Perspective rectifying mirror
Infrared mirror
Cylinder mirror

click on title to read the descriptions.


posted by Helen Ice

3.10.09

Carrot nanofibers to make snowboards and battleships

Innovations in new materials have been one of the key drivers in the rapid progress of technology during the past decades. The two best-known and widely-used examples being glass fiber and carbon fiber reinforced plastics (GFRP and CFRP), which are ubiquitous in many applications. However, neither of these materials have Green credentials. An alternative could be high performance biocomposite materials that have desired properties between GFRP and CFRP, are derived from sustainable materials and utilize greener, lower energy intensive production methods.

Enter the humble carrot.


click link to continue reading: http://www.nanowerk.com/news/newsid=1430.php



posted by Helen Ice

30.8.09

Don't buy Brazilian wood! watch the movie "They Killed Sister Dorothy"

trailer:
http://www.youtube.com/watch?v=sVaqqPURp1U

This movie is a true story about an American Nun who was trying to save the Amazon.

If you buy Brazilian wood check for this (image below) logo! if it doesn't have this logo it is illegal wood! If I was you I wouldn't buy any Brazilian wood or any product that has Brazilian wood in the USA. I strongly believe that every Brazilian wood that gets here is illegal wood. Heads up! Do your research!



Mariana de Salles Ewell