Plausible schemes to build a station in space were engineered on paper long before the war. European rocket enthusiasts, including Dr. Hermann Oberth, who may have been the designer of the V-2, had planned to use the space station not as a weapon but as a refueling point for rockets starting off on journeys into space. ... The only major obstacle: constructing a rocket powerful enough to reach a point where a space station could be built. If the modern German scientists had been able to make such a rocket, they might have ben able to set up their sun gun. Whether the sun gun would have accomplished what they expected, however, is another matter."
The German idea of using the sun as a military weapon is not new. There is an ancient legend that Archimedes designed great burning mirrors which set the Roman fleet afire during the siege of Syracuse, in which Archimedes later died. This legend, and the German plan for building may be proved physically impossible by a simple axiom of optics. This is that light cannot be brought to a sharp, pointed focus with lenses or mirrors unless it comes from a sharp, pointed source. Since the sun appears in the sky as a disk and not as a point, the best any optical system can produce is an image of this disk. At very short focal lengths, the image is small and hot but as the focal length is increased the image becomes progressively bigger and cooler. At the distance the Germans proposed to set up their mirror (3,100 miles) the image of the sun cast on the earth would be about 40 miles in diameter and not hot enough to do any damage.
Melvin had originally worked for Keith Bell’s father Jim. Keith remained a family friend and after chatting with his family was happy to make the wish come true.
He said: ”Melvin ended up driving the diggers for us and told me he wanted to make his final journey in one.
”When he first brought it up I thought he was joking but kept on going on and on about it.
”After he died, I dreaded bringing it up with his family, but Jean just said ‘we’ve got to do it for him, Keith, he went on about it all the time’.
Chinese has a long history with the printing. In 105 AD, Cai Lun invented the paper. In 200 AD, the Chinese invention of Woodblock printing produced the world’s first print culture. In 1040, Bi Sheng invented the first known movable type technology. Therefore, I want to use a Chinese text for my cube. The text I used for my cube is called “Three Character Classic.” It is a traditional Chinese text that teaches young children to be a good person in the society. The text is written in triplets of characters for easy memorization, which is perfect for the cube since the cube is 3 by 3 on every side. The text is written by Wang Yinglin during the Song Dynasty, so I used a font called “Song,” which is correspond to the Song Dynasty when a distinctive printed style of regular script was developed.
In ID-U Biometrics' system, the user has to watch a moving object onscreen, while the camera observes the motion of their eyes. Since the way our eyes move is based on a combination of factors --such as anatomy, physiology, behavioral characteristics, eye structure--it's a signature that simply can't be duplicated or forged, according to its developers.[...]
This approach differs radically from eye-related biometrics we've written about previously, such as iris scanning. Iris scanning systems rely on matching the image of your iris structure with a stored pattern of your iris. In contrast, the pattern the ID-U technology is based on consists of dynamic movements made by your eyes as they track a target, something that cannot be controlled or learned. "Most of the eye movement components are involuntary, and we are not aware of them at all," says Palti-Wasserman.
To allow sunlight into the house, there are a number of glass slits in-between the steps on the south side.The glass slits not only make them feel liberating but also keep their privacy at the same time.[...]
The outside structure links the garden to the rooftop, and the inside of the house links a private porch/reception/lounge area to the bedrooms. The windows are designed and situated to allow in as much sunlight as possible, whilst retaining privacy.
The galleries are placed at the bases of five solar thermal towers. The towers heat up and act as thermal chimneys to draw cooling air currents naturally through the museum. Fresh air is captured at low level and drawn through buried ground-cooling pipes and then released into the museum’s lobby. The heat at the top of the towers works to draw the air up vertically through the galleries due to the thermal stack effect. Air vents open at the top of the wing-shaped towers taking advantage of the negative pressure on the lee of the wing profile to draw the hot air out.
