As someone with a Ph.D. in physics, I found the whole article wrongheaded and partly wrong. Sure, Einstein's original paper (I did read it in its original German) did not have E=mc^2 in the short form, but don't worry, since it is still true. If you compress a spring, it weighs more. If you add a photon to a box, it weighs more. The net momentum of both does not matter here.
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dakellog
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What's Wrong With E=MC^2? 17 years ago
I should restate. Most of these companies have a presence in the Valley. Here's where they are.
1. IBM, Almaden 2. Microsoft, 85 and 101 3. Oracle, Redwood Shores 4. Google, next to Microsoft 5. Softbank, partner with Yahoo 6. SAP, Palo Alto 7. Accenture, San Jose, next to Adobe 8. Computer Sciences Corporation, haven't seen them 9. Yahoo, next to Moffet Field 10. Capgemini, Cupertino