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The order of the metals for this effect was the same as in Volta's series for contact-electricity, the most electropositive metals giving the largest photo-electric effect. Gold leaf electroscope demonstrating the photoelectric effect.
Kevin Carter's Pulitzer Prize–winning photograph of a starving Sudanese child and a vulture waiting in the background. The Vulture and the Little Girl, also known as The Struggling Girl, is a photograph by Kevin Carter which first appeared in The New York Times on 26 March 1993.
The antenna system is at the core of the chlorophyll molecule of the photosystem II reaction center. That loosened electron is taken up by the primary electron-acceptor molecule, pheophytin . As the electrons are shuttled through an electron transport chain (the so-called Z-scheme shown in the diagram), a chemiosmotic potential is generated by ...
Portrait Industries Corporation, a division of Max Ward-Delmar, gave Lifetouch a stronger presence in the preschool photography market. [30] [31] Portrait Industries, Inc. a company based in Mobile, Alabama, that specialized in preschool photography with national accounts such as Kindercare, La Petite, and Childtime, was acquired in the 1990s.
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The photo's caption read, "A person falls headfirst after jumping from the north tower of the World Trade Center. It was a horrific sight that was repeated in the moments after the planes struck the towers." [14] It appeared only once in the Times because of criticism and anger against its use. [15]
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