Images Dated 17th November 2004
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Choose from 113 pictures in our Images Dated 17th November 2004 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.
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Featured 17 Nov 2004 Print
Marrow and forget-me-not pollen, SEM
Pollen grains. Coloured scanning electron micrograph (SEM) of a pollen grain from a marrow plant (Cucurbita sp., left) and a forget-me-not plant (Myosotis sp., lower right). Marrow pollen is amongst the largest of any plant, whilst forget-me-not pollen is amongst the smallest. There is great variation in the size, shape and surface texture of pollen. The outer wall (exine) is highly sculpted in many plants, which may assist in dispersal. Each pollen grain contains a male gamete, which fertilises the eggs or ovules, initiating the formation of plant seeds. Magnification: x363 at 6x7cm size
© POWER AND SYRED/SCIENCE PHOTO LIBRARY
Featured 17 Nov 2004 Print
Flutterby B, Julia set detail
NOT FOR POSTCARD USE Fractal geometry. A computer graphics image entitled Flutterby B. The image was derived from the Julia Set, a classof shapes plotted from complex number coordinates.Each point is assigned a colour depending upon itsbehaviour under a series of simple, but repeated, mathematical operations or mappings. The Julia Setwas invented and studied during World War I by theFrench mathematicians Gaston Julia and PierreFatou. The better-known Mandelbrot Set arose as aresult of attempts, made in the 1970's, torationalise the massive variety of forms of theJulia Set.
NOT FOR POSTCARD OR PRODUCT USE WITHOUT CLEARANCE
NOT FOR USE ON A PRODUCT WITHOUT CLEARANCE
© Gregory Sams/Science Photo Library
Featured 17 Nov 2004 Print
Naegleria fowleri protozoa, TEM
Naegleria fowleri protozoan. Coloured transmission electron micrograph (TEM) of a section through a Naegleria fowleri protozoan. The nucleus (purple) contains a large nucleolus (orange), in which ribonucleic acid is synthesised. This organism is an opportunistic pathogen of humans, causing meningoencephalitis (inflammation of the brain and its surrounding membranes) when inhaled, often by children swimming in fresh water. Headaches, vomiting, sensory disturbance and a fatal coma may occur if the victim is not treated, often with a combination of antibiotics and anti-fungal drugs. Magnification: x3300 at 6x7cm size
© LONDON SCHOOL OF HYGIENE & TROPICAL MEDICINE/SCIENCE PHOTO LIBRARY
