Engineer friends: don't follow this link unless you want to spend hours entranced.
Short explanation for mere mortals on uranium enrichment. The is what Iran is trying to do in its Natanz plant.
The short and enjoyable videos posted here explain to the regular person how many things work or are made - from CCD sensors on cameras to the process of anodizing your iPod.
This new page on Apple's website shows how the signal drops whenever you hold a smartphone in a certain way. The whole thing seems kind of surreal to me.
This was done by some Application Engineers at work using equipment we make. It's a very neat demo. I stared at that old car from my window for months. Congratulations!
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