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Man shows impressive barehanded grip on South African cliff

VideoHasBeenSifted says...

A well rehearsed climb I assure you. A properly positioned camera to give the perception of great height. Most likely just a warm-up routine with no supportive gear. This is only about 100 ft from base and a pro-climber would not be exhausted by this. Classic view whoring. The overhang was route was specifically chosen so he could have something hang-off of. Another example of a low-achiever recklessly putting themselves in harms way so they can talk about adventure and achievement. Emergency workers are sickened by this. You are not suddenly "cool", "interesting", or respected by this.

Mother and Son Witness Tornado Touching Down

bremnet says...

I've been in every type of winter storm you can name (from Canada eh!), sandstorms in Saudi, monsoons in Thailand, typhoons in the Philippines, several wet seasons in northern Australia, and a fair few hurricanes here in Texas. But tornadoes - the tricky unpredictable bastards that you can't predict, plan for or gear up for, Mother Nature's switch blade, are the only things out there that freak me out.

"Holy shit, this is crazy" is the right response.

How This Cyclist Hit 184MPH and Set the World Record

BSR says...

I'm sure the tow, to get her up to speed, has to do with reducing wind and weight. The addition of the gearing needed to get her to up to those speeds without assistance would be ridiculous.

The point is, she broke a previous record using the same rules as the first person. If a pro wants to break the record he (or she) can follow the same rules. I have a feeling not many pros would take the risk and would be happy being on the lower shelf or different category. She accepted the challenge. AND SHE'S NOT EVEN A PRO!

eric3579 said:

Which i would guess could be achieved by a ridiculous amount of riders (with equal equipment), if so inclined. I doubt the rider has as much to do with it as the bike itself, and dragster slip stream. I also believe her balls are quite large to do such a thing.

How This Cyclist Hit 184MPH and Set the World Record

newtboy says...

I'm incredibly disappointed that they tow her up to over 150 before she starts peddling herself. At that speed, the draft pulls you along with minimal effort, making the speed she achieved far less impressive. I've hit over 60 behind a semi truck with no tow in on a regular road bike as a teenager, and could have doubled that with the right gears. The hard part was getting up to speed and into the draft, once in it, I barely had to pedal to keep up, but had to pump my legs like hummingbird wings to add any speed because I ran out of gears.

I feel like any cycling pro could do much better, she doesn't even know her top speed unassisted to within ten mph, which indicates she's not an avid rider. A pro will be able to tell you exactly how fast they can go on flat ground with no wind.

So good for her, but it's far less impressive to me than the title implies.

I was tired of shoveling my driveway

BSR says...

Doesn't he end up doing just about the same amount of work/energy as if he was shoveling? He's got the bike geared low so he's peddling pretty fast. He's got wheels but he's also got extra weight from the plow and himself and is pushing more snow than with a shovel.

If I only knew someone better at math than me.

newtboy said:

Even with the weights it's impressive he gets enough traction to push snow. *quality toy/tool. *promote

Meek Mill: Prisoners Deserve a New Set of Rights

CrushBug says...

The story that really pissed me off, was about wildfires in California.

They use prisoners from some prisons to the fight the fires. They are given training, gear, and leadership, and then they head out into the fires. Shoulder to shoulder, they work with career firefighters, trying to control one of the most uncontrollable elements, year after year.

And once they serve their sentence, and are released from prison, guess what job they can never have, after working at it for years?

Can This Change Everything for DJs

kir_mokum says...

this is pretty much bang on. there are several versions of a "special turntable" which are just controllers. you can use all in one controller set ups, CDJs/XDJs in HID mode, or rane's 12 turntable, which is just a stand alone controller for DVS. all in one controllers are geared more toward bedroom and wedding DJs, the rane 12 is pretty boutique and for turntablist/party rock DJs, and CDJs/XDJs are what everyone else uses and are industry standard and in every club/rave/festival/tech rider. there is also a growing move back to vinyl in certain scenes, especially techno and jungle/choppage/breakbeat hardcore scenes.

AeroMechanical said:

I'm pretty sure the vinyl itself has nothing on it. It's all digitized and stored in a module. The "Phase" device is just a very accurate, low-latency angular-position transducer for controlling the module.

So... why not just read the position directly from a special turntable (like the other digital sets they sell)? I dunno, I guess these let you use your favorite Technics turntables from 1989 that have just the right feel or whatever.

I don't know this, I'm just basing it on the evidence that there is clearly no stylus dragging across the record, so the sound can't be coming from there.

Ed: Oh, and I guess it's wireless. Maybe that's a big deal.

Hypersonic Missile Nonproliferation

Mordhaus says...

A big part of the Zero's reputation came from racking up kills in China against a lot of second-rate planes with poorly-trained pilots. After all, there was a reason that the Republic of China hired the American Volunteer Group to help out during the Second Sino-Japanese War – Chinese pilots had a hard time cutting it.

The Wildcat was deficient in many ways versus the Zero, but it still had superior firepower via ammo loadout. The Zero carried very few 20mm rounds, most of it's ammo was 7.7mm. There are records of Japanese pilots unloading all their 7.7mm ammo on a Wildcat and it was still flyable. On the flip side, the Wildcat had an ample supply of .50 cal.

Stanley "Swede" Vejtasa was able to score seven kills against Japanese planes in one day with a Wildcat.

Yes, the discovery of the Akutan Zero helped the United States beat this plane. But MilitaryFactory.com notes that the Hellcat's first flight was on June 26, 1942 – three weeks after the raid on Dutch Harbor that lead to the fateful crash-landing of the Mitsubishi A6M flown by Tadayoshi Koga.

Marine Captain Kenneth Walsh described how he knew to roll to the right at high speed to lose a Zero on his tail. Walsh would end World War II with 17 kills. The Zero also had trouble in dives, thanks to a bad carburetor.

We were behind in technology for many reasons, but once the Hellcat started replacing the Wildcat, the Japanese Air Superiority was over. Even if they had maintained a lead in technology, as Russia showed in WW2, quantity has a quality all of it's own. We were always going to be able to field more pilots and planes than Japan would be able to.

As far as Soviet rockets, once we were stunned by the launch of Sputnik, we kicked into high gear. You can say what you will of reliability, consistency, and dependability, but exactly how many manned Soviet missions landed on the moon and returned? Other than Buran, which was almost a copy of our Space Shuttle, how many shuttles did the USSR field?

The Soviets did build some things that were very sophisticated and were, for a while, better than what we could field. The Mig-31 is a great example. We briefly lagged behind but have a much superior air capability now. The only advantages the Mig and Sukhoi have is speed, they can fire all their missiles and flee. If they are engaged however, they will lose if pilots are equally skilled.

As @newtboy has said, I am sure that Russia and China are working on military advancements, but the technology simply doesn't exist to make a Hypersonic missile possible at this point.

China is fielding a man portable rifle that can inflict pain, not kill, and there is no hard evidence that it works.

There is no proof that the Chinese have figured out the technology for an operational rail gun on land, let alone the sea. We also have created successful railguns, the problem is POWERING them repeatedly, especially onboard a ship. If they figured out a power source that will pull it off, then it is possible, but there is no concrete proof other than a photo of a weapon attached to a ship. Our experts are guessing they might have it functional by 2025, might...

China has shown that long range QEEC is possible. It has been around but they created the first one capable of doing it from space. The problem is, they had to jury rig it. Photons, or light, can only go through about 100 kilometers of optic fiber before getting too dim to reliably carry data. As a result, the signal needs to be relayed by a node, which decrypts and re-encrypts the data before passing it on. This process makes the nodes susceptible to hacking. There are 32 of these nodes for the Beijing-Shanghai quantum link alone.

The main issue with warfare today is that it really doesn't matter unless the battle is between one of the big 3. Which means that ANY action could provoke Nuclear conflict. Is Russia going to hypersonic missile one of our carriers without Nukes become an option on the table as a retaliation? Is China going to railgun a ship and risk nuclear war?

Hell no, no more than we would expect to blow up some major Russian or Chinese piece of military hardware without severe escalation! Which means we can create all the technological terrors we like, because we WON'T use them unless they somehow provide us a defense against nuclear annihilation.

So just like China and Russia steal stuff from us to build military hardware to counter ours, if they create something that is significantly better, we will began trying to duplicate it. The only thing which would screw this system to hell is if one of us actually did begin developing a successful counter measure to nukes. If that happens, both of the other nations are quite likely to threaten IMMEDIATE thermonuclear war to prevent that country from developing enough of the counter measures to break the tie.

scheherazade said:

When you have neither speed nor maneuverability, it's your own durability that is in question, not the opponents durability.

It took the capture of the Akutan zero, its repair, and U.S. flight testing, to work out countermeasures to the zero.

The countermeasures were basically :
- One surprise diving attack and run away with momentum, or just don't fight them.
- Else bait your pursuer into a head-on pass with an ally (Thatch weave) (which, is still a bad position, only it's bad for everyone.)

Zero had 20mm cannons. The F4F had .50's. The F4F did not out gun the zero. 20mms only need a couple rounds to down a plane.

Durability became a factor later in the war, after the U.S. brought in better planes, like the F4U, F6F, Mustang, etc... while the zero stagnated in near-original form, and Japan could not make planes like the N1K in meaningful quanitties, or even provide quality fuel for planes like the Ki84 to use full power.

History is history. We screwed up at the start of WW2. Hubris/pride/confidence made us dismiss technologies that came around to bite us in the ass hard, and cost a lot of lives.




Best rockets since the 1960's? Because it had the biggest rocket?
What about reliability, consistency, dependability.
If I had to put my own life on the line and go to space, and I had a choice, I would pick a Russian rocket.

-scheherazade

Spinning a Lego Wheel FASTER

jmd says...

I had capsela's back when I was a kid and they gave a basic understanding of gear ratios. I mostly played with the X in one electronic component sets though.

This video seems like a wonderful must see for grade school engineering.

Spinning a Lego Wheel FASTER

Numinar says...

My first technic lego set was a bunch of gears and a motor with one of the models being a multi-speed gearbox. Had no idea what it was until my dad explained it.

Not that it paid off later but building it and adapting it into other awesome models was the most interesting thing I got out of my first 6 years of education other than basic literacy.

Rollerblading across the U.S. to restore faith in people

MilkmanDan says...

Cool.

I was interested enough to try to find information at circa.com, as suggested at the end of the video. Nothing immediately popped out at the top level domain, but a google search found a short story there where the last line was a link to her personal webpage:

https://yaniseho.com/the-bladress/

She's currently in Nebraska, with 169 days on the road and 2747 miles traveled. Not sure if she had phone/GPS issues or what, but there's a jump from day 93 to 119 as her position went from roughly NYC to Buffalo in that time.

I wonder if she's done any wheel and/or bearing replacements in her skates. Her frames/chassis look like Wizards (nice heavy-duty but light aluminum) with a quality boot that I can't recognize for sure but might be a Seba. Anyway, looks like relatively high-end, durable gear!

Elegant Friesian horse meets the neighbours cows

New gearing system could transform jet engines

b4rringt0n (Member Profile)

CeramicSpeed 99% Efficient Drive Shaft // Chain Free Bike

newtboy says...

The basic action is, but not the mechanism.
My idea....think spiral channels inside the tube with the cog shown attached to a piston that rides in the spiral channels. As you turn it and force is transferred, it forces the piston forward because the spiral turns rotational force into linear force. With a spring, you apply an opposing linear force so the piston only moves when those forces are unbalanced. This spring could be tunable so you select where the balance point of those forces is, thus selecting the maximum force you could apply before it changes gears for you. When there's more force applied, it "lowers" the gear, when less it automatically goes up a gear. No electronics or battery required.

eric3579 said:

At 4:20 of the vid i linked he shows what i think you are asking about.
Also @newtboy



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