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Things You Might Not Know: Glaciers Don't Go Backwards

greatgooglymoogly says...

Wow, I had no idea people though glaciers retreating meant the ice was actually going uphill. It's hard to understand how anybody could think that if they considered it for more than 30 seconds.

Yes, glaciers are like rivers, the ice plastically deforms and flows around obstacles. If anyone wants to see some great footage of this sort of thing, look up Chasing Ice

Russian Cargo Ship Loses Cargo of Big Ass Pipes

bremnet says...

They aren't wrapped in wood, but if this is uncoated pipe, some will lightly tack weld a ridge or piece of scrap barstock to the OD of the pipe to keep it from rolling when building the stack; they aren't there to prevent this type of major rolling action. At around 1:33 you can see one of these going over the edge. Just guessing, but these look to be in the 20" to 30" diameter range with plenty of length, so they're just really small ships with the ends cut off and will float for a bit until well flooded - lots of surface area there for some buoyancy, and I've seen 40 foot joints of 20" diameter casing float near the surface for 30 seconds or so when a bubble gets trapped temporarily inside before burping out and sinking to the bottom. At around 2:15 you can see the big reddish block with the vertical groove right on the corner of the load platform about 1/4 of the way up the frame. That's where normal humans stab the stake or pipe to help contain the load (so, the vertical pipe or solid stake goes in the hole, the load is built, and no rolling can occur - momentum is the killer here, so if you keep things from rolling, life is good. This was an excellent example of how not to load pipe on a barge / ship.

Payback said:

I was wondering why some of them seemed to float, but it looks like they were wrapped in wood planks.

Rogue One Trailer

Just another day in Russia

US Navy SEALs Combat Swim

chicchorea says...

Wikipedia
"The combat side stroke is a relaxing and very efficient swim stroke that is an updated version of the traditional sidestroke. The CSS is a mix of sidestroke, freestyle and breaststroke. The combat side stroke allows the swimmer to swim more efficiently and reduce the body's profile in the water in order to be less likely to be seen during combat operations if surface swimming is required. The concept of CSS has been that it can be used with or without wearing swim fins (flippers), the only difference being that when wearing swim fins the swimmer's legs will always be kicking in the regular flutter kick motion without the scissor kick. This stroke is one of the strokes that can be used for prospective SEAL candidates in the SEAL physical screening test (PST), which includes a 500-yard swim in 12 minutes 30 seconds to determine if the candidate is suitable to go to the Basic Underwater Demolitions/SEAL school.

Basics

The combat side stroke utilizes the three main fundamentals of swimming:

Balance: There are two things that affect your balance in the water - the head and lungs. Most people when swimming, especially when using breaststroke, will swim with their head up[citation needed] which forces their hips to sink down which is like they are swimming uphill and is a sign of being less comfortable. However, if the body is flat/horizontal or more parallel to the water-line it is far more effective and will allow the swimmer to feel more comfortable in the water.
Length: The taller the person is, the faster the speed through the water. As a result, it is important that the swimmer is fully stretched horizontally in the water, as this will reduce the body's drag through the water and allow a higher speed.
Rotation: In most sports, such as baseball, when the batter swings the baseball bat they will rotate the hips to increase the power of the swing. The same principle is applied to swimming. If the swimmer engages the hips and uses the body's core muscles it will increase power."

You rather nailed it.

SFOGuy said:

Clueless question; this style of swimming because it's really energy efficient? Because it makes less wake and is stealthier? Because it's harder to hit someone swimming like this in the water with gunfire?

Sorry, I'm not sure why they settled on this stroke...He says faster and more efficient---but---any engineers/biomechanics/hydrodynamics folks who tell tell me why?

Chardonnay Go'

newtboy says...

Oh.
Could have been funny if only it was 1)acted better, 2)written better 3) not been horrible quality with freezes and out of sync audio and 4) ended after <30 seconds. As it was, I couldn't sit through all 3:47

Apparently The Greatest Airbag Crisis In History Is Upon Us

radx says...

Nope, I've seen Toyota recalls in Europe, explicitely for faulty Takata airbags.

That said, I find the idea of a baby-claymore in your dashboard rather charming. Gives you an incentive not to crash. Can we get a study on this? Has this threat saved people from being mowed down by distracted drivers? Probably not, because people seem to lose interest after 30 seconds, but still...

More claymores, I say.

transmorpher said:

Is this US cars only?

John Oliver - 911

MilkmanDan says...

Couldn't (shouldn't?) somebody make an android / iOS app that has permissions to force turning on GPS tracking, dials 911 and lets the user talk as normal, and uses text to speech to repeat the lat/long coordinates from the GPS at a low volume every 15-30 seconds or something?

That wouldn't require a technological standard -- from the 911 dispatch perspective, it is all just analog / audio information. It would require people to download/install a 3rd party app, which isn't great since most people don't exactly plan ahead for emergencies like that. But, if it worked well enough and was unobtrusive enough, Google/Apple would probably be well served to adopt it as a standard feature of Android/iOS.

The Whoosh Bottle

newtboy says...

I actually did this as my high school chemistry project. I used 70% rubbing alcohol, 90% rubbing alcohol, and pure ether (don't try that at home, kids). You can get a number of different effects, only some of which were seen here.

As I recall, there were 5 distinct effects I noticed.
First, and most exciting, the jet. This was just a 2-6 foot jet of flame out the top, I surmised it was caused by low oxygen inside the glass making for a poor partial burn inside until the pressure pushes out enough unburnt vapor to burn outside. Depending on the fuel (both vapor level and fuel type), this could last up to 10 seconds.
There's a 'neck burn', where the flame hovers just inside the neck and just burns there, apparently in equilibrium, like an oil lamp.
There's the fire ball, which is just as it sounds, a round ball of fire, usually hovering in the top 1/3 of the bottle, sometimes bouncing up and down, but always centered.
There's the flash, where the entire interior flashes repeatedly, as seen in this video. This can end much more violently than it did here, 'pinging' the bottle loudly as the flashes get more powerful. When this happened with ether, we stopped, afraid we were making a glass bomb surrounded by high school kids.
Finally was the fire plane, also seen in this video, which can ascend, descend, or hover in place. This was my favorite effect, especially when it hovered and lasted up to 30 seconds long.

Good times, good times....FIRE GOOD.

M.O.P.Z. from Adult Swim

Tailgater vs Brake Checker

spawnflagger says...

upvote for brake-checker doing what I always want(ed) to do, but never felt like dealing with the paperwork if tailgater did hit me.

tailgater just needs to get some damn patience. There was plenty of traffic on that road that he would not have got to his destination more than 30 seconds earlier.

unless he really had to poop. then he just destroyed his suspension AND shit his pants.

GHOSTBUSTERS - Official Trailer

How SEALS training tests even Olympians

Knife Sharpening With Mino Tsuchida

AeroMechanical says...

I'm a fan of the electric grinding wheel sharpeners. Sure, it doesn't keep its edge as well as taking your time and doing it properly with a whetstone, but it's so easy, you can just sharpen your blade whenever it needs it. 30 seconds and you're good to go. It's easy, you don't have to be careful and it requires no skill.

I've never much cared for sharpening steels. Even with a good one and lots of practice (for a non-professional), I still screw it up at least one time in ten.

Panda Snow Day



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