SI
SI
discoversearch

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor.  We ask that you disable ad blocking while on Silicon Investor in the best interests of our community.  If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.
Politics : Foreign Affairs Discussion Group -- Ignore unavailable to you. Want to Upgrade?


To: Doug R who wrote (203016)9/15/2006 4:15:08 AM
From: Bilow  Read Replies (1) | Respond to of 281500
 
Hi DougR; Re: "NO amount of concrete will pulverize to 60 micron particles dropped from that height."

Go outside. Find a piece of concrete. Take it to a tall building. Throw it off of the roof onto a concrete surface. You will find that some of it turns to powder and some of it does not.

Hint: The corner that hits the ground first will be turned to dust. The corner that hits the ground last will come out looking fairly unhurt. Trust me on this one. I've tried it.

Hey WTC conspiracy theorists! Look at the type of people you're hanging out with! Doesn't that give you a clue?

-- Carl

P.S. Alternative experiment. Take two pieces of concrete. Hit them together real hard (wear protective goggles, gloves and thick clothing). You will find that the parts of the concrete that touched will be turned to dust. The rest of the concrete will be either almost untouched (despite the fact that all the concrete had the same kinetic energy during the collision), or at most broken back into aggregate.