search results matching tag: Particles

» channel: learn

go advanced with your query
Search took 0.000 seconds

    Videos (239)     Sift Talk (3)     Blogs (11)     Comments (630)   

Border Collie Disc Caddy

BSR says...

Get that dog some booties.

"If your dog spends a lot of time outdoors — whether in summer or winter — investing in dog boots is a good idea. Paws are sensitive to extreme heat, extreme cold, and sharp particles such as ice shards or sticks while hiking."

VIKENDI REBORN IS HERE AND IT IS GORGEOUS - Cinematic Map

newtboy says...

Is this a last gen game?
It looks nice, but sterile. Everything is too clean, relatively unblemished, no particles, trash, debris, or damage. Even the building models seem somewhat simplistic compared to ps5 games.

New York Nuclear PSA what to do in case of an attack

Tonga Eruption Causes Tsunamis all around the Pacific

newtboy says...

The Hunga Tonga undersea volcanic eruption was the largest on earth over the last 30 years, according to Research Physical Scientist Brian Brettschneider with the National Weather Service Alaska region.

Brettschneider said that the ash created by the eruption will likely cause a slight cooling effect on the climate, though not as dramatic as short-term climate changes from past volcanic eruptions. In 1815, the climate impacts caused by the Mount Tambora volcanic eruption caused what was called “the year without a summer.”

“What we’re seeing so far is a fairly minor amount of climate altering stratospheric sulfur particles have been detected so far,” Brettschneider said. “A pretty small amount relative to the size of the eruption, so kind of our first initial best guess is that there is going to be a pretty minor climate impact over the next few years.”

Of course, that can only account for the estimates of the blast so far, not any future eruptions that may or may not happen.
Estimates say the Hunga Tonga eruption was equivalent to 2% of the pressure released in the Krakatoa eruption for comparison.

eric3579 said:

Timestamps:
0:01 - 3:08 Peru
3:09 - 7:56 California
7:57 - 12:11 Japan
12:12 - 15:46 Chile
15:47 - 17:13 Ecuador
17:14 - 18:34 Hawaii
18:35 - 19:34 Oregon
19:35 - 20:19 Mexico

Has anyone heard/read if and how the eruption may impact global temperatures over the next few years? Curious what the climate scientist are predicting, but maybe to soon to know anything.

PFAS: Last Week Tonight with John Oliver (HBO)

newtboy says...

Actually it’s both. The final forms aren’t stable in the real world, they shed particles that are ingested, vapors inhaled, who knows, they are likely absorbed through the skin from many products.

Assume they aren’t actually toxic, functioning as designed they coat digestive systems and, if the report is to be believed, individual cells in extreme cases, leading to things like digestive issues and vaccinations not working. In developing children, it sounds disastrous…and it’s everywhere and in everyone….often in high levels.

This is akin to a crop that’s mildly toxic, not one adjacent to a pre existing separate toxic weed. You can’t plant this crop without permanently contaminating the field, and adjacent fields, and the local water sources, and to lesser extent anyone who uses the crop. There’s no separate toxic weed here, just a toxic crop we keep planting in new places, making the contamination much much more widespread at constantly increasing levels with no way to clean it up and little knowledge of the long term effects of such contamination. Pretty big gamble to take with the entire planet just so your thin rain coat doesn’t leak, don’t you think? Especially with a non biodegradable easily spread but impossible to remove toxic chemical with relatively unknown cumulative effects and no method whatsoever for removing it from people or the environment….like this one.

bremnet said:

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.

This Computer Is About to Change The World

vil says...

"This would take too long to explain?" Take a stab, you just spent 22 minutes beating about the bush.

Will bread be cheaper?

Governments and rich people will be able to break passwords. Three day weather forecasts will become four day weather forecasts. Pharma will make even more money. Duh.

Massive scientific improvements are fiction until they happen. Trickle down (anything) is fiction. We will never all own helicopters, while helicopters are awesome. This may be as useful to the public as large telescopes and particle colliders.

Not predicting a conspicuous failiure, but lets wait until the chicken hatch.

Living in a country that has trouble building and maintaining an elementary highway system gives you immunity to purely theoretical solutions to traffic problems.

What Was Happening Before the Big Bang?

newtboy says...

Ok...but we don't really know if one exists.
If there is a multiverse, even just a quantum multiverse, then there is no universe.
Subatomic particles wink in and out of existence. This at least hints at some place outside the "universe", which if correct means there isn't one.

robdot said:

Yes,the universe contains all that exists.

Negative Ion Products Are Dangerously RADIOACTIVE

drradon says...

without doubt, the garbage that was tested is worthless - but the testing presented was a bit naive. Alpha particles do have a very short path-length - the alpha radiation that he was detecting (while the emitter was covered) may well have been from radon gas that is being produced by the the thorium in these devices. The threat from skin exposure to directly generated alphas is likely negligible - but the threat from ingestion of the thorium oxide coming off these dangerous trinkets is likely much greater than he recognized. A significant fraction of lung cancer deaths are from inhaled radon daughter products that occur naturally - all these products are part of the decay series for thorium...

Demonstrating Quantum Supremacy

newtboy says...

Wow. Awesome.
*doublepromote *quality science.....a potentially exponential computing advancement, great until it becomes sentient and murderous.

Next, can they tackle Entangled Quantum Particle computing and communication. If we go to Mars, it would be great to have instantaneous communication instead of a varying delay each way.

Could Earth's Heat Solve Our Energy Problems?

newtboy says...

Please site your sources for this information.
I'm assuming they mean the estimated radiation from a properly functioning nuclear power plant and not the average actual radiation, which includes meltdowns, leaks, transportation accidents, etc. I can't imagine any geothermal plant ever contaminating like Chernobyl or Fukushima did.

It bears noting that coal ash is apparently 3-6 more radioactive than properly functioning nuclear power plants emit for the same energy generation, and it gets absorbed both directly from particles and indirectly in food and water.

Spacedog79 said:

Don't tell the environmentalists how much radiation geothermal releases. It is many orders of magnitude more than a nuclear power station and if they were held to the same standard they would never be built.

Fantomas (Member Profile)

Zawash (Member Profile)

siftbot says...

Congratulations! Your video, LEGO Particle Accelerator, 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 27 Badge!

Zawash (Member Profile)

My 4,566,300,000 Year Old Ring

newtboy says...

Even limestone? Fossils? ;-)

Also, I think you're conflating the particles age with the stone's age. There are almost zero stones that old on earth, most has been dissolved and reconstituted a few times over by now, with new (and new old) dust added constantly from space.

I think the value was in the insane impossible to recreate pattern, something the universe manufactured on it's own timeframe for it's own reasons.

Sagemind said:

Any ring made from stone taken from the earth can be labeled at 4.543 billion years old....

Just saying...
Humans like to manufacture value for the sake of it.

People See the Double-slit Experiment for the First Time

vil says...

Was hoping for an actual experiment.

You cannot both "detect" a photon/electron before it "enters a slit" and have it go through and "detect" it again at the back. That part is (probably) hogwash.

Detection at this scale really means fatal crash or at least deflection.

From what has been observed it would appear that in such an experiment an individual electron takes all the possible paths through both slits and the "waves" that "interfere" are waves of probability of the particle passing through detection points.

While it might as well be magic, really, QED does have observable rules, and this video might make it appear as though one could change the outcome by blinking an eye, which is not the case.

To make any headway stop thinking about tiny marbles. Think about tiny cartoon characters moving so fast they are smudged to invisibility whirring their tiny appendages around - you can only tell which particle and where it is if you swat it or it hits a wall and stops moving. There is no "detect but keep going as if nothing happened".



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