Search

Once the planes land, Wang and Ristroph analyze data from their flight and apply weights to change the balance of these gliders. FOR CENTURIES, PAPER AIRPLANES HAVE UNLOCKED THE SCIENCE OF FLIGHT - NOW THEY COULD INSPIRE DRONE DESIGNS. The team then tested a prototype glider in the University of Tokyo's hypersonic wind tunnel, subjecting the plane to speeds as high as Mach 7 and temperatures of almost 450°F - conditions similar to those a paper plane might face when reentering Earth's atmosphere. WHILE SUZUKI PLOTTED the planes' journey to the ISS, Toda would chart another path, racking up Guinness World Records for his paper airplane designs. [Extracted from the article]

Pg 32 | A Living History of the Humble Paper Airplane -> In 1998, aeronautical engineer and paper airplane fanatic Ken Blackburn earned the Guinness World Record for "time aloft" with a throw that sent his plane soaring for a whopping 27.6 seconds. "When I throw a new paper airplane for the first time, there's a 90 percent chance it will not fly the way I want it to", Blackburn says. Leading up to his then record-breaking throw, Blackburn constructed hundreds of planes and honed his toss. [Extracted from the article]

Retired U.S. Navy Admiral Timothy Gallaudet has published a paper arguing that unidentified anomalous phenomena (UAP) and unidentified submersible objects (USO) are linked and should be further studied. He believes that these "transmedium" UAPs and USOs, which can travel both in the atmosphere and in the water, pose a risk to U.S. maritime security. Gallaudet references incidents such as the 2019 encounter between the USS Omaha and a transmedium UAP, as well as a sighting in Puerto Rico in 2013. He also mentions the discovery of unusual holes on the North Atlantic seafloor. Gallaudet's advocacy for UAP research is rare among high-ranking military officers, and the evidence he presents is difficult to explain. The extent of future research on this topic remains uncertain. [Extracted from the article]

This article from Popular Mechanics discusses the evolution of handheld circular saws and reviews three top cordless saw models. The author tested the saws on various materials and judged them based on ease of use, tracking, accuracy, and run time. The article also provides information on saw blades and their suitability for different materials. The top-rated saw in the test was the Flex 6½-inch In-Line, followed by the Milwaukee M18 Fuel 6½-inch and the DeWalt 20V Max XR 6½-inch. Each saw was evaluated based on its features, performance, and value. [Extracted from the article]

The Rite in the Rain No. 935 notebook, produced by J.L. Darling, is a durable and water-repellent notebook that was originally designed for loggers in the Pacific Northwest. It is now used by various professionals, including the military, law enforcement, ranchers, farmers, foresters, marine biologists, contractors, and DIY enthusiasts. The notebook features PolyDura covers made of polyethylene plastic and special water-repellent 20-pound stock paper. It also has a Wire-O spiral binding that allows for easy flipping of pages without catching. The notebook can be found at Lowe's and is praised for its rugged build and ability to withstand wet conditions. [Extracted from the article]

In a paper published in the journal Matter, a groupof engineers at the University of Maryland did just that,crafting a chitin-zinc battery that's biodegradable butstill holds considerable juice. When theteam ran their crab-shell battery in the lab, they sawnone of that dendrite formation on the zinc anode. [Extracted from the article]

Mapping the unknowns // In a 2022 paper published in Nature Aging, LeBrasseur and his colleagues identified two specific cell subsets in muscle that tend to senesce. But in 2011 and again in 2016, a research group from the Mayo Clinic genetically engineered mice to have no senescent cells and showed that the mice did not develop cataracts or other signs of aging. AS WE AGE, OUR BODIES FILL UP WITH a type of dysfunctional cell that permanently stops dividing, called a "senescent cell.". [Extracted from the article]

Misusing p-values to support the idea that ESP exists may be relatively harmless, but when this practice is used in medical trials, it can have much deadlier results, says Baer. In the paper, he and his colleagues applied the fragility index to just under 400 randomized control trials with statistically significant results and found that one in four had low fragility scores, meaning their findings may not actually be very reliable or robust. Despite the uphill battle that the fragility index has fought thus far, Baer says he still believes it's a useful metric for medical statisticians and hopes that improvements made in their recent work will help convince others of that, too. [Extracted from the article]

Assembling these various parts and some capacitors into a crude prototype, he raised up the blade on the Craftsman saw to its full height, turned the saw on, and gingerly touched the side of the blade (but not the teeth) with his finger. Inventor Steve Gass fed a hot dog into a table saw's spinning blade to simulate what would happen to a human finger. As he pushed a maple drawer front through the blade, the wood pivoted to Massey's left, hooking into the spinning saw blade. [Extracted from the article]

Weassessed the track saws based on howeasy they were to set up and use, thequality of the sawed edge they left,and how much effort it took to pushthem along the track. Aside from the track, the saw itself is alittle different from a typical circular saw.With the blade retracted, above the shoe, youcan position the saw flat on the track. [Extracted from the article]

Slide a 12-volt or 20-volt DeWalt battery into it, plug the devices into its USB ports, and you're charging in no time. BEST CIRCULAR SAW BLADE DeWalt Elite Series DWAW71424 $13 To test DeWalt's Elite Series 7¼-inch framing blade, we installed it in a 15-amp corded circular saw and pushed it as hard and as fast as we could through Douglas fir framing lumber. BEST USB CHARGER ADAPTER DeWalt DCB090 $45 Juice up to two devices at a time from this handy DeWalt charger, built to withstand jobsite rigors. [Extracted from the article]

In other cases, you may opt to not shim to correct a miter that's open at the top or bottom but use the detent release lever that prevents the saw table from latching at a specific preset angle. And even a properly adjusted saw equipped with a less-than-perfect blade will do the job and yield an acceptable paint-grade miter on wood trim. Aside from saw adjustment and shims, a Starrett miter angle protractor is useful for finding the angle at which to set the saw when the corner where the trim meets isn't 90 degrees. [Extracted from the article]

A PAPER PUBLISHED AT THE END OF 2021 in Royal Society Open Science suggests your favorite professional soccer matches are not the nail-biters that they used to be. Researchers created a database of over 87,000 games spanning the course of 26 years in European soccer leagues between 1993 and 2019. With more money to buy and sell skilled players, teams at the top of the league can more reliably thrash their underfunded competitors who can't afford to stack their roster. [Extracted from the article]

How did Tyrannosaurus rex - an animal that stood a massive 12 feet tall - evolve to have puny arms only 3 feet in length? As a group, a gang of T. rexes likely fed on carcasses together, evolutionary biologist Kevin Padian of the University of California, Berkeley, theorized in a new paper. [Extracted from the article]

Freeman Dyson, a prolific British- American physicist, first introduced his eponymous Dyson Sphere concept in a landmark 1960 paper. A better alternative, then, is a Dyson Swarm - a take on the Dyson Sphere that features a collection of smaller, individual harvesters that orbit the sun like satellites, wirelessly transferring solar energy to the moon. [Extracted from the article]

-> BEST SAW FOR LAMINATE FLOORING Ryobi PGC21B $175 Thin-plank laminate flooring is popular for its ease of installation. Hart HPCS2 $128 We test homeowner and professional circular saws the same way. Equipped with a 7.25-inch blade, it made short work of 4x6 pressure- treated lumber, 2x10 Douglas fir, ¾-inch plywood, and laminate flooring. [Extracted from the article]