Simulator of a Boeing 747 Jumbo Jet
Flight simulator. View of the flight deck of a modern flight simulator. This is an exact replica of the flight deck of a Boeing 747-400 'Jumbo Jet'. All of the controls and instruments work exactly as on the real aircraft. A computer generated vision system can show almost any airport (here it is runway 28 Left at London Heathrow). The simulator is mounted on hydraulic legs that work with the vision system to replicate the forces felt by pilots during flight, including acceleration and braking as well as urning and vertical forces. The simulator is used to train pilots to fly the aircraft, to practice emergency situations and to conduct twice-yearly proficiency checks. Photographed courtesy of British Airways Flight Training.
© MARIA PLATT-EVANS/SCIENCE PHOTO LIBRARY
Geneva, Switzerland - The Brunswick Monument
Geneva, Switzerland - The Brunswick Monument - a mausoleum built in 1879 in Geneva, Switzerland to commemorate the life of Charles II, Duke of Brunswick (1804-1873). He bequeathed his fortune to the city of Geneva in exchange for a monument to be built in his name, specifying that it be a replica of the Scaliger Tombs in Verona, Italy. Date: circa 1910s
© Mary Evans / Grenville Collins Postcard Collection
Computer artwork of DNA replication
DNA replication. Computer artwork depicting DNA (deoxyribonucleic acid) replication. This segment of DNA is being "unzipped" to form a Y-shaped replication fork. During replication, the two spiral strands of DNA (red) unwind. Next, the bonds between the bases (pink, green, yellow & blue) that form the DNA's genetic code are broken by the enzyme DNA polymerase (zip at centre left). Daughter strands (blue) are built along each strand of parental DNA using the original base sequence as a template for the new matching DNA strands. Finally the enzyme DNA ligase (zips at upper and lower right) "zips" the strands together to form two identical molecules of DNA.
© LAGUNA DESIGN/SCIENCE PHOTO LIBRARY