On May 9, 1876, German inventor Nikolaus Otto working with Gottlieb Daimler and Wilhelm Maybach started the world's first internal-combustion engine that efficiently burned fuel directly in a piston chamber. However, German courts did not hold his patent to cover all in-cylinder compression engines or even the four-stroke cycle, and after this decision, in-cylinder compression became universal and the principle of Otto's engine still is the general principle for engines today. · http://yovisto.blogspot.de/2013/05/nikolaus-otto-and-four-stroke-engine.html

The incremental database reverse engineering (DBRE) add-on allows you to create an application tier of JPA 2.0 entities based on the tables in your database. DBRE will also incrementally maintain your application tier if you add or remove tables and columns. · http://static.springsource.org/spring-roo/reference/html/base-dbre.html

On 12 April 1961, aboard the Vostok 3KA-3 (Vostok 1), Soviet pilot Yuri Gagarin became both the first human to travel into space, and also the first to orbit the earth. · http://yovisto.blogspot.de/2013/04/juri-gagarin-first-man-in-space.html

On April 1, 1976, the original Apple Computer, also known retroactively as the Apple I was demonstrated for the first time in July 1976 at the Homebrew Computer Club in Palo Alto, California. The Apple I was a personal computer released by the Apple Computer Company designed and hand-built by Steve Wozniak. Actually it was Wozniak's friend Steve Jobs, who had the idea of selling the computer. Thus, the Apple I was Apple's first product, and to finance its creation, Jobs sold his only means of transportation, a VW Microbus and Wozniak sold his HP-65 calculator for $500. · http://yovisto.blogspot.de/2013/04/apple-1-and-homebrew-computer-club.html

On March 20, 1800, Italian physicist Alessandro Volta informed the British Royal Society in London about his newly invented electric power source, the Voltaic pile, the first energy source technology capable of producing a steady, continuous flow of electricity. · http://yovisto.blogspot.de/2013/03/alessandro-volta-and-electricity.html

On March 18, 1858, German inventor and mechanical engineer Rudolf Diesel was born, who invented the eponymous Diesel engine that uses the heat of compression to initiate ignition to burn the fuel. · http://yovisto.blogspot.de/2013/03/rudolf-diesel-and-his-famous-engine.html

On February 21, 1947, American scientist and inventor Edwin Land introduced the very first instant camera together with an associated film. Land's new camera would allow people to produce a black and white photograph in about sixty seconds. The new film already contained the necessary chemicals to develop and fix the image directly on the photographic paper. · http://yovisto.blogspot.de/2013/02/edwin-land-father-of-polaroid-instant.html

On January 29, 1886, German engineer and entrepreneur Karl Benz patented the first successful gasoline-driven automobile. · http://yovisto.blogspot.de/2013/01/karl-benz-and-his-automobile-vehicle.html

On January 23, 1840, German physicist, optometrist, entrepreneur, and social reformer Ernst Abbe was born. Together with Otto Schott and Carl Zeiss, he laid the foundation of modern optics. As a co-owner of Carl Zeiss AG, a German manufacturer of research microscopes, astronomical telescopes, planetariums and other optical systems, Abbe developed numerous optical instruments. · http://yovisto.blogspot.de/2013/01/ernst-abbe-brilliant-engineer-and.html