Images.4channel.org/f/src/589217_scale_of_universe_enhanced.swf. - Pressure § Harvard Natural Sciences Lecture Demonstrations. Thomas Thwaites: How I built a toaster -- from scratch. Print your own flute. Sandrine Ceurstemont, video editor Cheap 3D printers can now quickly make plastic replicas of almost anything, from an insect's wings to copies of their own parts.
But now Amit Zoran and his team from the MIT Media Lab have used one to recreate the intricate design of a flute (see video above). They started by making a digital model of the instrument based on a metal flute but with adaptations to account for the new materials used, and the level of precision possible, with 3D printing. The model was then sent to a 3D printer which constructed the flute in four parts over a period of 15 hours. It squirts out three different plastic composites developed by Objet, the company that created the printer they used.
When tested by a flautist, the plastic flute was given the thumbs up for sound. The goal, however, isn't to create a flute that's superior to a metal one: the challenge is to print a working flute that's acoustically and ergonomically similar.
Evolution. Video : how to make magnetic fluid hq - Vidivodo. 10 Strange Things About The Universe - Top 10 Lists | Listverse. Space The universe can be a very strange place. While groundbreaking ideas such as quantum theory, relativity and even the Earth going around the Sun might be commonly accepted now, science still continues to show that the universe contains things you might find it difficult to believe, and even more difficult to get your head around. Theoretically, the lowest temperature that can be achieved is absolute zero, exactly ? 273.15°C, where the motion of all particles stops completely. However, you can never actually cool something to this temperature because, in quantum mechanics, every particle has a minimum energy, called “zero-point energy,” which you cannot get below. Remarkably, this minimum energy doesn’t just apply to particles, but to any vacuum, whose energy is called “vacuum energy.”
One prediction of Einstein’s theory of general relativity is that when a large object moves, it drags the space-time around it, causing nearby objects to be pulled along as well. Reflecting on a new generation of mirrors - Image 1.