Okay, okay, so the last time a company teased "something big," they were exaggerating a tad, but this video here comes from SpaceX, maker of giant rockets. So when the only commercial organization that shot a hunk of burning metal into orbit and retreived it back on Earth tells us to look out for something with "five new engines" and "two new rockets" on 11:15AM ET on April 5th, you'd best believe we're going to have our tails firmly pressed into comfy chairs and popcorn at the ready to watch it. Spoiler alert: it's probably the Falcon Heavy.
As you may know, crafting a katana is a delicate process that involves carefully constructing a razor-sharp high-carbon edge around a soft shock-absorbent core. One day though, smiths and forging fires could be replaced by electrode-wielding mad-scientists, with the technology to selectively harden and soften metal at will. At least that's what we envisioned when we read about Jörg Weißmüller's breakthrough research in the field of nanomaterials. The German scientist discovered that by placing precious metals in acid he could create tiny ducts through corrosion. Once those channels are flooded with a conductive liquid, electrical currents can be used to harden the material and, if you change your mind about the brittle results, the effect can easily be reversed to make it soft again. The tech could eventually lead to self-healing vehicle armor or scratch-resistant cellphones -- but, really, we just want to zap our way to a high-quality samurai sword. Physorg
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