Anyone with a color printer knows that selling replacement ink cartridges is the quickest way to become a millionaire. But what if your printer never needed a single drop of ink to produce color images at impossibly high resolutions? A new laser printer can already do that by etching microscopic patterns onto sheets… Read more…
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This Laser Printer Creates High-Res Color Images Without a Single Drop of Ink
Anyone with a color printer knows that selling replacement ink cartridges is the quickest way to become a millionaire. But what if your printer never needed a single drop of ink to produce color images at impossibly high resolutions? A new laser printer can already do that by etching microscopic patterns onto sheets… Read more…
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This Laser Printer Creates High-Res Color Images Without a Single Drop of Ink
Anyone with a color printer knows that selling replacement ink cartridges is the quickest way to become a millionaire. But what if your printer never needed a single drop of ink to produce color images at impossibly high resolutions? A new laser printer can already do that by etching microscopic patterns onto sheets… Read more…
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This Laser Printer Creates High-Res Color Images Without a Single Drop of Ink
Anyone with a color printer knows that selling replacement ink cartridges is the quickest way to become a millionaire. But what if your printer never needed a single drop of ink to produce color images at impossibly high resolutions? A new laser printer can already do that by etching microscopic patterns onto sheets… Read more…
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This Laser Printer Creates High-Res Color Images Without a Single Drop of Ink
Anyone with a color printer knows that selling replacement ink cartridges is the quickest way to become a millionaire. But what if your printer never needed a single drop of ink to produce color images at impossibly high resolutions? A new laser printer can already do that by etching microscopic patterns onto sheets… Read more…
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This Laser Printer Creates High-Res Color Images Without a Single Drop of Ink
Physicists have created a fluid with “negative mass, ” which accelerates towards you when pushed. From a report on BBC: In the everyday world, when an object is pushed, it accelerates in the same direction as the force applied to it; this relationship is described by Isaac Newton’s Second Law of Motion. But in theory, matter can have negative mass in the same sense that an electric charge can be positive or negative. Prof Peter Engels, from Washington State University (WSU), and colleagues cooled rubidium atoms to just above the temperature of absolute zero (close to -273C), creating what’s known as a Bose-Einstein condensate. In this state, particles move extremely slowly, and following behaviour predicted by quantum mechanics, acting like waves. They also synchronise and move together in what’s known as a superfluid, which flows without losing energy. Read more of this story at Slashdot.
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Physicists Observe ‘Negative Mass’
Earlier today, NASA announced funding for 22 projects as part of its Innovative Advanced Concepts (NIAC) program. From a planet hopping laser-driven sail and a solar powered Venusian weather balloon to an autonomous rover on Pluto, the future of space exploration looks incredibly bright. Read more…
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These Are the Wildly Advanced Space Exploration Concepts Being Considered by NASA
My first question was, “What is a time crystal?” Harvard graduate students Soonwon Choi, Joonhee Choi and postdoctoral researcher Renate Landig all started laughing. “That’s a very good question, ” said Soonwon. The time crystal’s silly science fiction name shrouds its deep quantum mechanical nuance. Sometimes a name… Read more…
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Scientists Finally Observed Time Crystals—But What the Hell Are They?
What if you could cool buildings without using electricity? charlesj68 brings word of “the development of a plastic film by two professors at the University of Colorado in Boulder that provides a passive cooling effect.” The film contains embedded glass beads that absorb and emit infrared in a wavelength that is not blocked by the atmosphere. Combining this with half-silvering to keep the sun from being the source of infrared absorption on the part of the beads, and you have a way of pumping heat at a claimed rate of 93 watts per square meter. The film is cheap to produce — about 50 cents per square meter — and could create indoor temperatures of 68 degrees when it’s 98.6 outside. “All the work is done by the huge temperature difference, about 290C, between the surface of the Earth and that of outer space, ” reports The Economist. Read more of this story at Slashdot.
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Professors Claim Passive Cooling Breakthrough Via Plastic Film
An anonymous reader quotes a report from Hacked: Earlier this month Hacked reported that a draft version of the much expected EmDrive paper by the NASA Eagleworks team, had been leaked. Now, the final version of the paper has been published. The NASA Eagleworks paper, titled “Measurement of Impulsive Thrust from a Closed Radio-Frequency Cavity in Vacuum, ” has been published online as an open access “article in advance” in the American Institute of Aeronautics and Astronautics (AIAA)’s Journal of Propulsion and Power, a prestigious peer-reviewed journal. The paper will appear in the December print issue of the journal. The final version of the paper is very similar to the leaked draft. In particular, the NASA scientists confirm the promising experimental results: “Thrust data from forward, reverse, and null suggested that the system was consistently performing at 1.2 +/- 0.1 mNkW, which was very close to the average impulsive performance measured in air. A number of error sources were considered and discussed.” The scientists add that, though the test campaign was not focused on optimizing performance and was more an exercise in existence proof, it is still useful to put the observed thrust-to-power figure of 1.2 mN/kW in context. “[For] missions with very large delta-v requirements, having a propellant consumption rate of zero could offset the higher power requirements. The 1.2 mN/kW performance parameter is over two orders of magnitude higher than other forms of ‘zero propellant’ propulsion, such as light sails, laser propulsion, and photon rockets having thrust-to-power levels in the 3.33–6.67 uN/kW (or 0.0033–0.0067 mN/kW) range.” In other words, a modest thrust without having to carry fuel can be better, especially for long-distance space missions, than a higher thrust at the cost of having to carry bulky and heavy propellant reserves, and the EmDrive performs much better than the other “zero propellant” propulsion systems studied to date. Read more of this story at Slashdot.
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Final NASA Eagleworks Paper Confirms Promising EM Drive Results