Sherlock Holmes and Dr. Watson Flame emission spectra of alkali metals Golden eagle, historical artwork Durer's Rhinoceros, 1515 Spine anatomy Spine anatomy Hummingbirds, historical artwork Early electrical equipment Foot anatomy by Leonardo da Vinci Newton's optics Young hare, by Durer Rhazes, Islamic scholar Shelduck, historical artwork Standard electrical circuit symbols Newspaper printing press Early electric lamps Legend of Archimedes and the lever Redshank, historical artwork Body musculature Sir Isaac Newton, British physicist Apollonius of Perga, Greek mathematician Table comparing ancient scripts Development of Arabic numerals Butterflies, artwork Sandpiper, historical artwork Atauriques in the Nasrid palace, Granada, Andalucia, Spain Johannes Kepler and Tycho Brahe Galileo using a telescope Phrenology chart Measuring electric voltage Measuring electric current Computer hard disk assembly Paracelsus and the Basel tribunal Egyptian and Assyrian counting systems 1920s television system, diagram Body musculature Iron pyrites Foot bones Muscles of the foot Red kite, historical artwork Foot bones and ligaments Rainhill Trials steam trains, 1829 Early petrol locomotives Table from Becher's 'Opuscula chymica' Dolmen, Neolithic burial chamber 4500 years old, Pembrokeshire, Wales Villa Torrigiani, Camigliano village, Lucca, Tuscany, Italy, Europe Villa Torrigiani, Camigliano village, Lucca, Tuscany, Italy Olive trees, Puglia, Italy, Europe Page 2 Page 3