John Deere’s New Ride-On Mower Is One of the First To Have Airless Tires

John Deere's New Ride-On Mower Is One of the First To Have Airless Tires

Michelin and Bridgestone have been racing to take the air out of everyone’s tires—but in a good way. Both companies have been developing open-air wheels that will never puncture or deflate, and while they’ve mostly seen use in research and military vehicles to date, John Deere will finally offer a ride-on mower that uses Michelin’s see-through Tweels.

Billed as a sort of tire/wheel hybrid, the Tweel uses a reinforced outer tread that’s connected to a central hub with a series of rubber spokes that flex and give just like a real tire. A tire made entirely of rubber would be just as durable, but the rider would feel every bump and obstacle. So the open-air design of the Tweel strikes a better balance between comfort, shock absorption, and durability.

John Deere's New Ride-On Mower Is One of the First To Have Airless Tires

But John Deere isn’t slapping these new tires on the consumer-friendly ride-ons you’ll find at Sears. The first mower with a pair of Michelin’s Tweels is the $8,000+ commercial-grade ZTrack 900 Airless-Tire Mower that’s targeted at those who cut lawns—gigantic lawns—for a living. Even when used on a daily basis the Tweels last about two to three times as long as conventional air-filled tires, and they’re actually better designed to tackle larger obstacles like curbs, providing more stability for the rider as they’re traversed. [John Deere via Popular Science]

via Gizmodo
John Deere’s New Ride-On Mower Is One of the First To Have Airless Tires

Improve Your Posture with these Exercises from the Army Field Manual

Improve Your Posture with these Exercises from the Army Field Manual

Posture can affect a lot of things, including our confidence and how other people feel about us. Teach yourself good posture by practicing these exercises from the Army Field Manual. Good posture is a habit that pays off over time.

The Army Field Manual features ten exercises that require you to move in a variety of different directions and ways. I found performing Exercise 1, which involves a lot of arm swinging, to be particularly relieving when I get out of my seat. Some of these exercises are pretty conspicuous and may be difficult to do in a suit or formal pants, but a lot of them can still be performed in the workplace.

These exercises are great to get you out of your seat. While you’re in your seat, you can do yourself a favor by fixing your computer hunch and other posture problems.

WWII Workout Week: Posture Training | The Art of Manliness


via Lifehacker
Improve Your Posture with these Exercises from the Army Field Manual

An EDC Video Full of Surprises: This Man’s Truck is a Rolling Armory

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There’s a reason "The Walking Dead" is set in the South; because watching a bunch of us Yankees trying to load 9mm rounds into a .45 or accidentally ejecting the magazine every time we try to turn the safety off would probably not be that compelling to watch.

Gun culture varies widely in the United States, depending on everything from local laws to regional history to personal upbringing. In NYC most firearms are illegal, thus law-abiding citizens here grow up with no familiarity with them; but I’ve met folks down South for whom owning and carrying multiple guns at all times is natural, and for whom firearms instructions was a part of their childhood.

The unnamed vet (that’s veterinarian, not veteran) behind YouTube channel Demolition Ranch clearly falls into this latter category. His vehicle-based "everyday carry," or EDC video below skirts the line between dead-serious and tongue-in-cheek and packs several surprises. Regional differences being what they are, I’m sure Northerners will find it eye-opening while Southerners will think it old hat:

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via Core77
An EDC Video Full of Surprises: This Man’s Truck is a Rolling Armory

New amazing metal is so hydrophobic it makes water bounce like magic

New amazing metal is so hydrophobic it makes water bounce like magic

Scientists at the University of Rochester have created a metal that is so extremely hydrophobic that the water bounces on it as if it were repelled by a magic force field. Instead of using chemical coatings they used lasers to etch a nanostructure on the metal itself. It will not wear off, like current less effective methods.

The applications can be revolutionary: From the construction of airplane surfaces—which will avoid water freezing of the fuselage—to non-stick pans to phones to computers to TVs to cars to whatever you can imagine made of metal. They are also thinking of applying the technique to create 100-percent efficient water recollection systems in underdeveloped countries and the creation of latrines in areas where water is not abundant enough to allow for effective cleaning.

But it gets even better: The lead scientist says that ‘the structures created by their laser on the metals are intrinsically part of the material surface’ so they will not disappear over time, like current chemical coatings do.

New amazing metal is so hydrophobic it makes water bounce like magic

Their research paper says they made the metals using a "powerful and precise laser-patterning technique that creates an intricate pattern of micro- and nanoscale structures to give the metals their new properties." According to Chunlei Guo, professor of optics at Rochester the effect is amazing:

The material is so strongly water-repellent, the water actually gets bounced off. Then it lands on the surface again, gets bounced off again, and then it will just roll off from the surface.

Here’s Guo in a explanatory video along with the co-writer of the study, Anatoliy Vorobyev, who is a professor at the University of Rochester’s Institute of Optics.


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via Gizmodo
New amazing metal is so hydrophobic it makes water bounce like magic

New terrifying crosswind landing videos will haunt my flights forever

New terrifying crosswind landing videos will haunt my flights forever

We’ve seen insane landings before—those videos haunt my thoughts vividly every time I’m on a plane. And yet, I want to see more. Here are two new videos showing the terrifying wind conditions over Birmingham’s airport in England. I just added it to my list of places I don’t want to fly to.


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via Gizmodo
New terrifying crosswind landing videos will haunt my flights forever