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space elevator
A space elevator is a hypothetical structure designed to transport material from a planet's surface into space. Many different types of space elevator structures have been proposed. They all share the goal of replacing rocket propulsion with the trav...
plant breeding
Genetic engineering, genetic modification (GM), and the now-deprecated gene splicing are terms for the process of manipulating genes, usually outside the organism's normal reproductive process.It often involves the isolation, manipulation and reintro...
types of water turbines-part 1: kaplan
The Kaplan turbine is an inward flow reaction turbine, which means that the working fluid changes pressure as it moves through the turbine and gives up its energy. The design combines radial and axial features.The inlet is a scroll-shaped tube that w...
plants-photosynthesis
Plants are photoautotrophs, which means they are able to synthesize food directly from inorganic compounds using light energy, instead of eating other organisms or relying on material derived from them. This is distinct from chemoautotrophs that do n...
magnetic force
A magnetic force microscope (MFM) is a scanning probe microscope (SPM) that can map the spatial distribution of magnetism by measuring the magnetic interaction between a sample and a tip. As magnetic devices have become smaller and smaller, an evalua...
