The ChS8 is an electric mainline passenger locomotive used in Russia and Ukraine. Built between 1983 and 1989, it was developed for pulling long passenger trains (28–32 carriages) at speeds of 100 kilometres per hour (60 mph) or faster. Since 2010 Russia has switched to more energy-efficient designs, such as the EP10 and EP20.
The Geneva drive is a gear mechanism that translates a continuous rotation into an intermittent rotary motion. The rotating drive wheel has a pin that reaches into a slot of the driven wheel advancing it by one step. The drive wheel also has a raised circular blocking disc that locks the driven wheel in position between steps. Such a mechanism is used in film projectors, watches, and indexing tables, among others.
A female African bush elephant (Loxodonta africana) in Mikumi National Park, Tanzania. These herbivorous mammals are the largest land animals on Earth; males average 3.3 metres (11 ft) tall at the shoulders and 5.5 tonnes (12,000 lb) in weight, whereas females average 2.8 metres (9.2 ft) in height and 3.7 tonnes (8,200 lb) in weight. Owing to their great size, adult African bush elephants have no natural predators except for humans. Calves, however, are predated by lions and crocodiles.
Before (left) and after pictures of a French soldier who was fitted with a craniofacial prosthesis by the Red Cross. Such protheses help rehabilitate those with facial defects caused by disease, trauma, or birth defects. They are designed to be as similar as possible to the natural anatomy of each individual, covering, protecting, and disguising facial disfigurements or underdevelopments.
Deke Slayton (center) shows the adapter improvised by Ed Smylie so that carbon dioxide accumulating in Apollo 13's Lunar Module (LM) cabin could be removed using the Command Module's (CM) differently shaped lithium hydroxide canisters. After the spacecraft's oxygen tank exploded on 13 April, 1970, the crew – Jim Lovell, Jack Swigert, and Fred Haise – faced severely limited power, a loss of cabin heat, a shortage of potable water, and a critical excess of carbon dioxide. They spent four days in the "two-person" LM, then returned to the CM and splashed down safely in the Pacific Ocean.
Cotton MS Augustus II.106, one of four surviving exemplifications of Magna Carta. This document, sealed by King John of England on 15 June 1215 (O.S.), was drafted by the Archbishop of Canterbury to make peace between the unpopular king and a group of rebel barons. The charter promised the protection of church rights, protection for the barons from illegal imprisonment, access to swift justice, and limitations on feudal payments to the Crown. The document was reissued and renewed several times over the centuries, though its political impact decreased as later laws were passed. The charter was significant because the king had agreed to limit his power, so that although it dealt predominantly with the king and the barons, since the late 16th century it has been considered a symbol of liberty and the freedom of the individual.
Mycena leaianavar. australis photographed in Mount Field National Park, Tasmania, Australia. The color of the Australian and New Zealand variety of M. leaina differs from the American one, which has bright orange caps and stalks and reddish-orange gill edges.
The Great Hall in Parliament House, Canberra, which is accessible through the public entrance to Parliament. This hall is used for state functions, though it is also rented out to the public for such events as weddings and graduations. The tapestry at the rear of the room is an enlarged version of an Arthur Boyd painting, the original of which is found elsewhere in the building. At 20 by 9 metres (66 ft × 30 ft), the tapestry is one of the largest in the world.