He and his group, along with Caltech's Axel Scherer , added a few clever twists.

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Dickinson, 47, is an Australian-born electrical engineer who previously ran photonic chip company Luxtera (which he cofounded with Caltech's Scherer).

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For example, if an entrepreneur graduated at the top of his class from Harvard, Stanford, MIT, or Caltech, with a host of awards and achievements, it would carry weight with a potential investor.

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The Caltech researchers did an experiment with two decks of red and blue cards.

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"This is one of the brightest and whitest things we've seen with the Mastcam at the Gale Crater site, " said Melissa Rice, from the California Institute of Technology (Caltech), in Pasadena.

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