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AnotherLee

Youtube videos worth watching

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Indy Dave
And in case you're a Porsche hater maybe you'll like this. But I have to warn you it's the same stuff, just less of it. :grin:

 

Pretty cool!

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AnotherLee

I propose a toast!

Edited by AnotherLee

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Steve1962

...........enjoy........

 

 

Steve

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AnotherLee

Published 8 years ago so maybe you've seen it but worth seeing again - power line maintenance via helicopter

 

Edited by AnotherLee

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chrisolson

This forum will be transformed shortly ... a preview of things to come.

youtube.png

 

 

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AnotherLee

Chris — Love the visuals. No doubt easier to include than previously. Thanks for the preview.

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RandyShields

Particularly for the engineers in our group, here is a very funny comedy bit using charts to illustrate his points.

 

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Joe Frickin' Friday

Pi (3.14159...) shows up in the weirdest places:

 

 

Two questions:

 

#1: why does pi make an appearance there?

 

#2: who the hell thought they should look there for pi, and why???

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AnotherLee

RandyShields — Good one! :rofl:

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BrianM
Pi (3.14159...) shows up in the weirdest places:

 

 

Two questions:

 

#1: why does pi make an appearance there?

 

#2: who the hell thought they should look there for pi, and why???

 

ARRRGH Mitch you suck!

 

Now I am going to have to figure it out. Before the 20th.

 

Found paper describing the process - https://www.maths.tcd.ie/~lebed/Galperin.%20Playing%20pool%20with%20pi.pdf

 

Don't have time to read in detail now, quick overview the math does not look terrible.

Edited by BrianM

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TEWKS

On the edge for sure! Although, he seems quite comfortable there. :thumbsup:

 

 

Pat

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Joe Frickin' Friday

 

Photoshopping still images is nothing new; we've learned to be skeptical about "photographic evidence" these days.  Video, however, is another matter.  For a long time, it's been difficult, expensive, and time-consuming to manually alter video footage.

 

That's about to change.  If you haven't heard of "deepfake" videos yet, you will soon.  Deepfake tech is getting good enough to realistically superimpose the facial features of person A onto a full-motion video of person B.  Pay person B to engage in whatever activity you ask, and you can then produce video "evidence" of person A engaging in that activity.   It still takes a fair bit of computing power and processing time to make high-quality renderings, but that kind of computing power will, before long, exist in a basic desktop PC.  

 

Here's an amusing but disturbing example of what's possible:

 

 

This is obviously surreal...but imagine instead that someone has made a video of you in bed with someone other than your spouse, and they're using it to blackmail you.  What are you going to do?  They've got high-quality video "evidence" that clearly shows your face.

 

Now imagine that government officials in charge of national security are being similarly blackmailed.  The possibilities are kind of unsettling.   The government is working on ways to identify deepfake videos, but as the tech gets better and better, the cues that give away the fakes become more and more subtle.  

 

In the past, clear video evidence could easily result in a conviction "beyond a reasonable doubt," but deepfake tech is threatening to make video evidence no more reliable than eyewitness testimony.

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RandyShields

Steve looks much younger.

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AnotherLee

Our lovely Aussie travels to Belarus -- these guys know how to party!

 

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artig

The workings of a sequential gearbox are fascinating. They are used in both motorcycles and in F1 racecars. This video has a good explanation and demonstration of an older F1 gearbox internals.

 

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BrianM

Cool video.

 

Motorcycle gearboxes (at least the ones I have had apart) work very similar, but not quite the same as the F1 box in the video. In a motorcycle, the shift forks slide gears (on both shafts)  back and forth, some gears on each shaft are connected to the shaft, some free. The gear pairs are in constant mesh.

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Joe Frickin' Friday

An impressive FPV drone flight montage here.  Take some Dramamine, find the biggest monitor you can, and run the video in full screen mode:

 

 

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RandyShields

Wow, fantastic footage.  The quality of the video is really amazing.  Some of the aerial scenes remind me of the 70mm movie To Fly, which was funded by and has been airing at the Smithsonian Air and Space Museum since the mid-1970s.  I also wonder if any of the scenes from the US violated the FAA rules on drones.

 

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Joe Frickin' Friday

This octopus is timid, but extremely curious:

 

 

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Stir
On 12/29/2017 at 4:57 AM, John Ranalletta said:

NSFW but not porn. Ave is likely a genius w/ deep background fixing industrial machinery & systems. His language is very rough. He buys and tests tools and appliances to their breaking points and isn't a shill for any company or product.

 

Will take the time to explain the metallurgy, electrosity (his term) and hydraulic processes.

 

https://www.youtube.com/channel/UChWv6Pn_zP0rI6lgGt3MyfA

 

LOL, the Mofo just makes up words.  Good info though!

 

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AnotherLee

Incredible speeds, dramatic crashes, chain reactions - - DOMINOES! (link)

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lkraus

0-62 mph in 0.551 seconds.  

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Joe Frickin' Friday

A couple of years ago I bought a SawStop table saw.  It's been reassuring to have that little extra margin of safety, but the downside is that if/when that saw blade brake deploys, it's a one-time-use device and costs $70 for a new brake module.  The device is supposed to sense when the blade contacts meat (i.e. your fingers) but it will react to any material that is conductive enough.  So if you're sawing wet wood, or you hit a nail, you're gonna be out $70 for no good reason (unless you remember to override the mechanism before you begin your cut).

 

So along comes Destin, the "SmarterEveryDay" guy.  In this video, he and a friend demonstrate a patent-pending scheme for preventing kickback in handheld circular saws, as shown in the below video.  It uses accelerometers to identify the beginning of a kickback event, and activates the saw's built-in dynamic braking to slow the blade down before the whole circular saw gets flung up into your face.  So it doesn't care what you're cutting, whether it's wet, dry, or a frozen side of beef, and activation doesn't waste a one-time-use brake mechanism.  Check out the video:

 

 

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