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FOR CENTURIES. PAPER AIRPLANES HAVE UNLOCKED THE SCIENCE OF FLIGHT--NOW THEY COULD INSPIRE DRONE DESIGNS. SHINJI SUZUKI MET Takuo Toda in 1999, atop Mt. Yonami in the southern city of [...]

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]

DIFFICULTY Time: 1 hour Ages 12+ MATERIALS LIST * 1-inch x 3-inch x 4-foot poplar project board * two 3-volt electric motors (Lowe's item #364310, model #884477) * push-button on-off [...]

8 Pro Challenge THE MISSIVE TO POP MECH READERS, VIA Instagram, was this: Make something with LEGO that will make your (or someone else's) life easier, and show us the results. AUTOMATIC TOILET PAPER DISPENSER The Builder: Steve Guinness @thebrickconsultant Guinness builds commissioned LEGO models for customers, and is the British LEGO Masters champ. [Extracted from the article]

The article offers step-by-step instructions for creating paper airplane, bootjack, and saw-blade trivet.

The article offers step by step instructions for making a paper airplane launcher.

Everyone, or at least some people, has wanted to be a DJ. Not a radio jock or a sweaty guy in a vest who spins vinyl at bar mitzvahs but [...]

The article talks about the profile of Luna who is biased never really watched a lot of Star War and make a lot of mistakes, and also reflects her keeping of a Leatherman multitool in her back pocket.

Unless you count Nobel Prizes, no one is handing out merit badges for a life well lived. There's no handbook given to first graders that explains when you'll need to [...]

The article evaluates several high technology products, including the Taycan electric automobile developed by the Porsche company, the electronic mobile writing tool known as the Free-write Traveler and the Zeiss ZX1 Camera.

The article discusses how Mike Clements, a telescope enthusiast built an amateur telescope and his inspiration behind it.It tells us how Clements developed interest in Telescope making after visiting the Griffith Observatory in Los Angeles and how he built his first telescope from a toilet-paper tube and his father's eyeglasses.He then built the world's largest amateur telescope which is thirty-five feet tall, weighs four thousand pounds and consists of 70-inch mirror.

The article presents questions and answers on topics including properties of magnets, putting toilet paper on seat can save from germs, and reason for the shortage of quality toasters.

HAVE A WEIRD IDEA. I want to put a Kindle in space. Not literally (or for literature)--instead, I want to take the technology of a Kindle's E Inkscreen and put [...]

The article presents questions and answers related to wood pressing issues which includes building of a retaining wall out of pressure-treated wood, peeling off of stains on wooden decks and use of a sharpening stone on a handle.

Every year, the Federal Reserve destroys 7 billion damaged bills. Stacks of cash go into a giant paper shredder with carbon-steel blades that turn the bills into 0.08- by 0.75-inch [...]

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]

The article shows the statistics of toys tested by "Popular Mechanics" staff for children including 115 toys sent to its offices, 15 children of the staff played on the toys, and 9 paper planes were folded prior to flying them.

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]

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]

8 Deep Math ACOB HOLM WAS FLIPPING THROUGH proofs from an October 2019 research paper he and colleague Eva Rotenberg - an associate professor in the department of applied mathematics and computer science at the Technical University of Denmark - had published online, when he discovered their findings had unwittingly given away a solution to a centuries-old graph problem. Holm and Rotenberg were trying to find a shortcut for determining whether a graph is "planar" - that is, if it could be drawn flat on a surface without any of its lines crossing each other (flat drawings of a graph are also called "embeddings"). It seems subjective to say the Ladder Graph is "good" and its alternatives are "bad", but Holm and Rotenberg articulated in their paper why those statements were mathematically true. [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]

AN ANCIENT VOLCANO BENEATH NEVADA and Oregon could hold the largest deposit of lithium ever found, scientists revealed last summer in a peer-reviewed paper published in Science Advances. This section [...]

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]

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]

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]

THE WALLS OF THE CELL WHERE CHRISTOPHER HAVENS WAS SERVING A 25-YEAR MURDER SENTENCE WERE COVERED IN NOTEBOOK PAPER. The sheets filled with numeric and Greek scratchings had quickly overwhelmed [...]

7 Science SINCE THE GERMAN PHYSICIAN CARL Reinhold August Wunderlich published his research on human body temperature in 1868, 98.6 degrees Fahrenheit has been the gold standard. The study was sparked by a review of modern temperature studies where patients uniformly fell below the 98.6-degree Fahrenheit mark - a signal that something was rotten in the state of human body-temperature research. In their paper published in the journal eLife, Parsonnet and her colleagues suggest that a change in inflammation levels over time is the most likely explanation for the decrease in temperature. [Extracted from the article]

On these pages, we'll show you the fundamentals on how to get a glass-smooth surface, explain the nuances in levels of grit, and offer thoughts on the best power sanders we've tested that are worth your money. EDITORS' CHOICE BOSCH ROS20VSC Price: $69 | Weight: 3.5 lb This Bosch is comfortable, sands quickly, and has the best dust collection of the corded sanders we tested. A POWER SANDER IS A SIMPLE TOOL THAT CAN smooth a piece of furniture you've proudly built, strip rust, deburr a sharp metal edge, or remove weathered paint. [Extracted from the article]

SCIENTISTS SAY THEY'VE DISCOVERED a 'large scale structure' in a largely unseen part of the Milky Way galaxy, according to a preprint paper published to the arXiv server late last [...]

^ BEST CORDLESS RECIPROCATING SAW Milwaukee 2821-21 $319 Milwaukee's heavy-duty corded reciprocating saw, the Super Sawzall, has been famous for decades. <- BEST 18-GAUGE FINISH NAILER Milwaukee 2746-21CT $399 Milwaukee's 18-volt, 18-gauge finish nailer is one of the best we've used, cordless or air-powered. Also, the gear geometry is such that, when the saw is on, the worm gear can turn the worm wheel, but not the other way around. [Extracted from the article]

The article offers information on how the April 2019 issue of "Popular Mechanics" is made of 2,500 feet of paper per minute spooling by a printing press at Quad/Graphics Inc. in Saratoga Springs, New York where Chuck Clark and his team perform lot of the regular maintenance themselves.

Our team of over-qualified experts walk you through 20 projects that will inspire you to make a million more. The Best Paper Airplane BARNABY WAINFAN, technical fellow and aerodynamicist, Northrop [...]

The article offers tips on creating a garbage can and a curved photographic background using cardboard.

The article presents step-by-step instructions for making a curved background for photographing a display piece.

The article offers tips for surviving a natural disaster. These involve putting a plastic bag on each foot before wearing shoes to make them warm from cold, using a brick to open canned goods and laying down a cardboard to act as one's temporary shelter and insulator. It also provides steps for acquiring a clean water through filtration.

The article discusses key issues that arose after publishing of the white paper called "Hyperloop Alpha" by Elon Musk by being disappointed by the highspeed- rail system being built through the center of California. Some of the issues include whether anyone has taken up challenge of Musk to develop hyperloop technology, whether Hyperloop One was cofounded by Brogan BamBrogan and challenges associated with Hyperloop.

The article offers information on the journal's editor Richard Romanski's tip to avoid fold-over of rolls of duct tape, and mentions that he attaches a wood chip on the end.

The article offers several step-by-step instructions including making a wallet, sharpening stone and creating a pencil box and presents several recipes for pancakes, hummus and peanut butter dream drink.

ON PAPER, IT'S ONE OF THE SIMPLEST math problems in the world: 2+2. If you're counting something, like screws at the hardware store, it's pretty straightforward. But the lines blur [...]

The article offers suggestions including use of wall-mounting holes for attaching bathroom basin, making of rigid wood sanding block from cardboard, and use of carriage bolt for extending nails.

The article focuses on the deep waters of Gulf Of Mexico along with brief information on several mechanical products. Topics discussed include the floating production, storage, and off-loading facility (FPSO), Turritella floats on the surface between an oil platform and a tanker which belongs to Shell Oil Company, views of oceanographer Steve DiMarco on direction of ocean currents and the bicycle Roubaix from Specialized Bicycle Components and the pen InstruMMents 01 from InstruMMents.

The article discusses various tips which include using acetone nail polish remover to clean paint that might have accidentally dripped on a door hinge, using lip balm for temporary waterproofing and wrapping duct tape around a pencil or battery to save space.