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Images Dated 30th April 1999

Available as Framed Prints, Photos, Wall Art and Gift Items

Choose from 8 pictures in our Images Dated 30th April 1999 collection for your Wall Art or Photo Gift. Popular choices include Framed Prints, Canvas Prints, Posters and Jigsaw Puzzles. All professionally made for quick delivery.

Queen Victoria at breakfast in Osborne Gardens with the Duke of Connaught
Topfoto

Northern Hawk Owl (Surnia ulula) at nest with chicks, Alaska
Nature in Print

British particle physicist Adrian McKemey
Science Photo Library

BaBar silicon strip detector, SLAC
Science Photo Library

Physicists work on BaBar detector at SLAC
Science Photo Library

McDonald Creek and the Garden Wall, Glacier N.P., MT
Animals Animals

Red-Eared Sliders Hatching (Chrysemys scripta elegans) Central & Southern USA
Animals Animals

Featured 30 Apr 1999 Print

BaBar silicon strip detector, SLAC

BaBar silicon strip detector. Female physicist below the silicon strip vertex detector (SSD) for the BaBar particle detector. It is hoped that BaBar, at the Stanford Linear Accelerator Center (SLAC) in California, USA, will explain why there is more matter than antimatter in the universe. It will detect the B mesons and their antimatter equivalents, anti-B mesons, that result from the collisions of accelerated electrons and positrons. This detector lies at BaBar's heart and allows the fine tracks of charged particles emerging from the collisions to be observed. To explain the greater amounts of matter in the universe, B mesons should decay at a different rate from anti-B mesons