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Delta wings - wings in the form of triangle. Used i.e. in Eurofighter (German), F-106 Delta Dart (USA), Vulcan (GB). Such wings have better aerodynamic parameters in supersonic speeds, are stronger, than normal wings and can be built from lighter materials.
Cyber Fish - robot built by Polish students from Kracow University of Technology - looks, moves and swims like normal fish. Moreover robot has own 'inteligence' which allows him to move and navigate autonomously. Below is the video with Cyber Fish swimming without hitting edges of the pool.
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CWS T-1 it's a Polish car which was built after 1927 till 1933. Car was very successful vehicle, but production had to be suspended due to agreement between Polish government and FIAT company. Poland bought license from Fiat to produce one of their cars (Fiat 508) and in return Polish companies had to stop producing competitive car - CWS T-1. The reason was that production of Italian car was cheaper than Polish one.
Few days ago we write about the longest marketplace in Pultusk. Today we have for You amphibia created by family from this city. Just look how well they built it.