search results matching tag: surface

» channel: learn

go advanced with your query
Search took 0.001 seconds

    Videos (703)     Sift Talk (34)     Blogs (32)     Comments (1000)   

bobknight33 (Member Profile)

newtboy says...

$2.5 million so far on Jan 6. Not $40-60 million, but that would still be worth it. Safeguarding democracy is cheap at that price. Plenty of importance has come to light, but I wouldn’t expect you to know or acknowledge that, you are certainly remaining willfully ignorant of what’s come to light just like mr mushroom tip told you to do, and no one knows what the closed door testimony was yet besides the DOJ.
It cost near $500000000 to safeguard DC in the months after Jan 6…$2.5 million is literally 1/2 of 1% of one cost of Jan 6.

So let’s talk Benghazi, just one report of 13 cost taxpayers $7 million. So far, the Republicans have wasted $22 million on Benghazi, and $100 million total on investigating Clinton with no charges and no revelations of import, and no infractions Trump didn’t repeat.

Right. A concerted effort to perform a violent coup coupled with a second concerted effort to defraud the election using fake electors with forged documentation and a lie about election fraud is, to you, nothing of importance.
Sorry, I find democracy important.
Sorry, I find the constitution to be important.
Sorry, I find treasonous sedition against the union to be important.
I think prosecuting 874 seditious traitors to America and the constitution is important, and i think uncovering who the other appropriately 1100 more are is important.
I think knowing Trump knew his fraudulent voter fraud scheme was illegal before it started is important (since he was declared too stupid to know working with Russia to discredit Clinton was illegal in the past).
I think knowing the voter fraud theory came from something a drunken Giuliani found on Facebook or Twitter with no evidence, before the votes were counted, was important.
I think uncovering the begging for pardons by senators and representatives that planned the coup is important (it’s an admission of guilt and of knowledge of a crime).
I think a Supreme Court judge’s involvement in the coup is important.
That’s barely scratching the surface of important evidence that’s come to light so far.

This….this is why we say you are probably a Russian. You act like defending democracy and the American government are nothing important and nobody cares. No American would think that, but it is true that you SAYING something doesn’t mean you actually think it’s true.

bobknight33 said:

how much has been spent on investigation Trump ? 40 ---- 60 Million and still nothing of importance has come to light.

Wake up from you delusional dream and accept reality.

Understanding the worst power outage in N. America ever

Khufu says...

I was in downtown Toronto when this happened... middle of afternoon power drops and I left work... was closest thing to a zombie movie I've ever experienced... luckily I was close to freeway and was on the road so quickly... but looking down off the Gardiner Expressway I could see the city surface streets were just completely packed with cars and electric streetcars blocking up all the uncontrolled intersections... no one could get to the freeway and it was just me driving up there... then later when I had to go back downtown at night to find someone, the freeways had cars that had run out of gas scattered along the sides the whole way there.. unreal.

Science of keeping migrating birds off a toxic water pit

Danny MacAskill Vs Wind Turbine | Climate Games

spawnflagger jokingly says...

so if the percentage increases by 1% each time his tires touch a new horizontal surface, then it should be pretty easy to reach 100% clean electricity production. Why did this BMXer stop at 29% ???
Come on man!

PFAS: Last Week Tonight with John Oliver (HBO)

bremnet says...

Howdy - I don't know if "addressed" is the right word. Commented on, but not given sufficient perspective. Having said that, the problem is incredibly complex, so there should be no expectation that Mr. Oliver's video or any other single thesis on the topic could possibly suffice.

Your "one chemical bond difference" is an appropriate consideration, but with recognition that once we reach on the order of C20-C40 length dispersable or emulsifiable molecules as surfactants / surface energy modifiers, the insoluble polymers come into play, with not 30'ish bonds growing one at a time, but leaping to 20,000 or more. No doubt the pool has already been irreversibly pissed into by the irresponsible producers that convert small molecules into very, very large ones, but with some control, responsibility, and integrity in our industrial process owners (yes, hell just froze over) there is no reason why we could not safely continue to produce the polymeric forms of PFAS. We do so for substantially more toxic chemical conversion processes today.

It's interesting to note the (usual) examples brought forward by others in this post (Teflon cookware), just waiting for someone to mention Gore-Tex, but by far the biggest impact won't be on consumer goods that we all touch regularly and recognize the name brands of, but will be on the industrial / commercial uses of these polymeric families that are pervasive in the systems / processes that we all derive benefit from every day. Ironies exist, that perhaps confuse the "all PFAS are bad" premise ... consider - effectively every seal, gasket and control valve in a water purification plant is most commonly made of a PFAS polymeric compound, PTFE included, all tested to rigorous specifications and compliance by specific agencies that do nothing other than deal with potable water (thankfully not the EPA - it's National Sanitation Foundation (the other NSF), or Water Research Advisory Scheme (WRAS) in the UK etc.) .

So my contention and the view of many in the end user community is that it's not the final form of some of these compounds that are bad, it's the horrendous messes we leave producing them. We can't unwind our Clock of Dumb, but killing the entire crop just to get rid of the long ago seeded weeds doesn't solve the actual problem, it makes it much, much larger.

Thanks for your comments.

newtboy said:

To be fair, most of your complaints were addressed in the piece.

For instance, medical implants, fairly stable, yes, but not in extreme heat like cremation, so as used they’re toxic to the environment despite being considered stable and inert.

The reason to ban them all was also explained, banning one toxic substance at a time means one chemical bond difference and the company can go ahead with Cancer causer 2.0 for a decade until it’s banned for being toxic, and then repeat. It’s how they’ve operated for decades.

I’m fine with outlawing the entire class and putting the onus on the chemical companies to prove any new variants are safe instead of forcing the hamstrung epa to prove they’re unsafe. I also think any company that dumped it into waterways should be instantly and completely forfeited to pay for cleanup. No company has the funds to pay for cleanup, but their assets are at least a start.

The History of Portal

vil says...

I have probably mentioned this, but IMHO portal was invented by Terry Pratchett.

Discworld, Book 22, The Last Continent (1998)

The wizards looked at the gently rippling surface. There should have been several feet of solid wood sticking out of it.
“Well, well, well,” said the Archchancellor, going back in out of the cold air. “Do you know, I’ve never actually seen one of these?”
“Anyone remember Archchancellor Bewdley’s boots?” said the Senior Wrangler, helping himself to some cold mutton from the trolley. “He made a mistake and got one of the things opened up in the left boot. Very tricky. You can’t go walking around with one foot in another dimension.”
“Well, no…” said Ridcully, staring at the tropical scene and tapping his chin thoughtfully with the seashell.
“Can’t see what you’re treading in, for one thing,” said the Senior Wrangler.
“One opened up in one of the cellars once, all by itself,” said the Dean. “Just a round black hole. Anything you put in it just disappeared. So old Archchancellor Weatherwax had a privy built over it.”
“Very sensible idea,” said Ridcully, still looking thoughtful.
“We thought so too, until we found the other one that had opened in the attic. Turned out to be the other side of the same hole. I’m sure I don’t need to draw you a picture.”
“I’ve never heard of these!” said Ponder Stibbons. “The possibilities are amazing!”
“Everyone says that when they first hear about them,” said the Senior Wrangler. “But when you’ve been a wizard as long as I have, my boy, you’ll learn that as soon as you find anything that offers amazing possibilities for the improvement of the human condition it’s best to put the lid back on and pretend it never happened.”
“But if you could get one to open above another you could drop something through the bottom hole and it’d come out of the top hole and fall through the bottom hole again…It’d reach meteoritic speed and the amount of power you could generate would be—”
“That’s pretty much what happened between the attic and the cellar,” said the Dean, taking a cold chicken leg. “Thank goodness for air friction, that’s all I’ll say.”
Ponder waved his hand gingerly through the window and felt the sun’s heat.
“And no one’s ever studied them?” he said.

Mordhaus (Member Profile)

siftbot says...

Congratulations! Your video, A rare view of the surface of a comet, has reached the #1 spot in the current Top 15 New Videos listing. This is a very difficult thing to accomplish but you managed to pull it off. For your contribution you have been awarded 2 Power Points.

This achievement has earned you your "Golden One" Level 579 Badge!

Mordhaus (Member Profile)

Lake Oroville Drought, California

newtboy says...

More good news. So much is being pulled from aquifers to make up for and combined with the loss of surface water that the water table is dropping (along with the entire central valley). This means that, as they draw down reservoirs to empty to supply downstream communities with water, much of that water goes underground because the water tables have dropped below river beds, so the rivers cannot retain and transport the water. This is just starting to happen, but is definitely going to have major impacts in the future, causing the majority of California's water transportation system to be unusable.

Time to invest in desalination.

China/Shaky building/Collapsing

C-note says...

This is so bad in China. This video barely scratched the surface. People their do not have access to the american markets so they try to create wealth by investing in property. I have a friend who rented an apartment a few years ago in a upscale building near the heart of Shanghai. 3 months after signing the lease his water pressure dropped drastically. 6 months later the apartment hard no water pressure at all. The landlord still expected the rent but he packed and moved out at night.

The surprising history of hand-washing - BBC REEL

BSR says...

Being in the death business I wash my hands a lot to the point where it's hard to separate two sheets of paper or handle cardboard boxes due to having no oils to grip with. It's not like I can just swipe some saliva off my tongue. I do wear rubber gloves when handling the deceased but not everything is sanitized such as door knobs and surfaces where you would not normally use gloves. I always use rubber gloves to pick my nose though.

Colorado Police Break Elderly Dementia Patient's Arm

newtboy says...

Video has surfaced of this cop and his cohorts watching the footage together at the department and laughing about injuring her horrifically, talking about how much fun it was to forcibly wrestle a feeble old woman, repeatedly throw her to the ground, and try to break her shoulder, how much they LOVE it that she was hurt, repeating excitedly and happily "you hear the pop! I thought I broke her shoulder.....I love it."

No good apples.

Never use Wire Nuts Again - Wago is Better Connector

spawnflagger says...

Saw this a while back on YouTube - plenty of professional electricians in the comments there who say they got so many callbacks on Wago, but never for wire-nut.

Personally I've had one fail (I didn't install it though) - my bathroom which was partially remodeled < 2 years prior, the light above the sink started flickering randomly. I checked each bulb, they were fine, so I opened up the switch box - and there were some of those Wago-style (a cheaper knock-off I suspect) that were quite loose when tugged. So I removed them, used wire-nuts, and it's been totally stable since.
The other benefit to wire-nuts is that twisting the copper wires around each other greatly increases the contacting surface area. (the surface of a wire is where the electrons/holes flow)

How a Kar98k Works

bremnet says...

It's considered to be a very reliable and long lasting action. The fit and design keep the action "tight" through repeated use and reduces wear on mating surfaces. A larger-than-most extractor claw reduces the possibility of stuck rounds from breaking the claw or slipping out during extraction. A noticeably smoother action when chambering or extracting a round. I don't know that it contributes to the accuracy of the rifle, would say not in my experience, but opinions vary.

Making Spherical Tanks Through Explosive Hydroforming

eric3579 says...

From YouTube videos description..

Explosive hydroforming, also known as HERF (High Energy Rate Forming) or exploform, is a striking alternative to the more traditional process of metal hydroforming. Unlike this older method, which shapes metal using pressurized hydraulic fluid pumped into a forming chamber, HERF techniques utilize an explosive charge to create the necessary pressure. Although the charge is relatively small, it is capable of generating enough force to mold the associated metal into the die.

The explosive charge is typically positioned at a specific distance from the workpiece, and both are immersed in fluid, usually hydraulic fluid or simple water. Certain facilities may also use oil, gelatin, liquid salts, or regular air as the transmission medium. However, water is the most commonly used medium as it is the least expensive, excellent for creating uniform peak pressure, and readily available. Once the charge and workpiece are properly positioned, the charge is detonated, pressing the workpiece into a die. The part is then removed and the process is repeated if necessary.

Explosive Hydroforming Methods
Explosive hydroforming techniques fall into two basic categories. Although both methods function according to the same general principles, they rely on very different placement of the explosive charge within the forming chamber.

Standoff Method: With the Standoff Method, the explosive charge is used in conjunction with an intervening medium. In most hydroforming applications, the intervening material is typically water, oil, or air. The required deformation level dictates how far the explosive charge is placed from the piece of metal to be formed. When the charge detonates, the ensuing force is transmitted through the fluid and pressures the metal into the die. Detonations used in the Standoff Method can often reach several thousand pounds per square inch (psi).

Contact Method: In the Contact Method, an explosive charge is placed in direct contact with the forming metal. This process generates far more pressure than the more conventional Standoff Method. By placing the explosive charge in close proximity to the surface material, the detonation can result in as much as several million psi.



Send this Article to a Friend



Separate multiple emails with a comma (,); limit 5 recipients






Your email has been sent successfully!

Manage this Video in Your Playlists

Beggar's Canyon