Two-sided blades, Lower Acheulean Period (flint)
XIR62270 Two-sided blades, Lower Acheulean Period (flint) by Paleolithic; Musee des Antiquites Nationales, St. Germain-en-Laye, France; (add.info.: Acheulean period ended 200000-150000 years ago;); out of copyright
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Bifacial, Blade, Deux Bifaces, Tool, Yes Thats 200 000
Mars Exploration Rover
Mars Exploration Rover on the surface of Mars, artwork. The first of two identical NASA rovers, Spirit, landed on Mars on 4 January 2004. The second, Opportunity, landed on the other side of the planet on 24 January 2004. The rovers are powered by solar panels (black) and are mobile. Cameras mounted on the white mast give scientists panoramic views of the Martian surface. This enables them to instruct the rovers which rocks to analyse and where to look for water. Tools on board the golf buggy-sized rovers include spectrometers for analysing rock samples, a microscope and an abrasion tool. Each rover has a 90-day mission on the surface of Mars.
© NASA/SCIENCE PHOTO LIBRARY
Commercial diver welding
Welding underwater. Commercial scuba diver using an electric arc welder underwater. Underwater welding is used to assemble or repair structures beneath the sea, such as offshore oil platforms. Photographed in the French Mediterranean Sea.
© Alexis Rosenfeld/Science Photo Library
Assembling, Builder, Building, Commercial, Constructing, Construction, Device, Diver, Diving, Electric Arc, Equipment, France, French, Industrial, Industry, Inpp, Institute, Male, Man, Marine, Marseille, Mediterranean, National, Ocean, Professional, Scuba, Sea, Technological, Technology, Tool, Under Water, Welder, Welding, Worker, Working