Images Dated 16th June 2006

Quantised orbits of the planets

Quantum orbits of the planets. Conceptual computer artwork showing the planets of the solar system on a model of atomic orbitals. This represents the theory that the orbits of the planets were determined by similar physical principles to those governing the orbits of electrons. Electrons can only occupy distinct energy levels around an atom, rather than having the capability to be anywhere. These quantum levels are determined by the electron's energy. The theory that similar effects occur at the solar system scale is controversial and not widely accepted, as the orbits can be explained by well-understood gravitational theory

© MEHAU KULYK/SCIENCE PHOTO LIBRARY

Oil palm fruits are piled on a road-side along

Oil palm fruits are piled on a road-side along one of the oil-palm plantations (Elaeis guineensis). Labuk Bay, Sabah, Borneo; Malaysia; June. Oil palms oil is used in cosmetics, food and fuels, and the plantations now occupy vast territories and still expand, threatening forests. The photographer holds a typical cut bunch of fruits

© Andrey Zvoznikov / ardea.com

GAUSS: TITLE PAGE, 1801. Title page of the first edition of Karl Friedrich Gauss

GAUSS: TITLE PAGE, 1801.
Title page of the first edition of Karl Friedrich Gauss Disquisitiones Arithmeticae, which announced the discovery of the Law of Quadratic Reciprocity and other vital developments in the theory of numbers

© none

1801, 1st, Book, Carl, Disquisitiones Arithmeticae, Early, First Edition, Frederick, Gauss, German, Johan, Law Of Quadratic Reciprocity, Leipzig, Mathematic, Text, Titlepage