This also seems a convenient bit of propaganda, of course they would say that to scare the Russians.
If it's true, it's a really cool feat of engineering though! Can't wait for the fog of war to lift and see what cool civilian applications all this drone tech will have.
I'm looking for a better knife sharpener for my hard steel chef knife. I think whetstones are the way to go, but most of the sets I see are 4 double sided stones. Do I need that many stones?...
I have some better quality kitchen knives I like keeping sharp.
I use a two-sided whetstone 400/2000 grit for basic shaping (400 is akin to those rolling sharpeners, to be used only when you fucked up real bad), a leather strop with green sharpening paste (~6000-8000 grit) glued to a piece of wood, a plain leather strop, and a honing steel.
Green sharpening paste is most of what I ever use, a couple of strokes weekly (more realistically about 20 once a month), and maybe polish it up with the plain leather strop. Keeps the knives wicked sharp, and then I just hone them after each use.
Sometimes I do stupid things and get burrs in my edge (like cleaving frozen bone), that's where the 2000 grit saves me.
400 I guess is for when the apocalypse comes or your kids decided to practice chef's knife throwing into scrap metal. It's nice to know I can remake a whole edge, but rarely used.
Unfortunately, Russia decided early on that international law and relations are an acceptable price for their war. That means some bad stuff will come their way as well, and very little sympathy will be heard from the rest of the world.
My list is quite different than the ones currently in the thread.
The boring ones:
Creating a vaccine or other cloaking to make humans invisible to ticks & mosquitoes. A separate project would be to do the same for parasites.
Enacting strict pollution/carbon limits and mandatory circular economy everywhere in the world.
Researching, trialing and Enacting a sustainable post-capitalist system everywhere in the world.
Developing solar energy until covering global energy demands, including a power network that can transport energy from the sunny side and/or orbit everywhere.
The slightly more ambitious:
Establish self-sustainable colonies living on off-earth resources, most probably also situated off-earth.
Create a Dyson swarm with enough energy output for in-system exploration, mining, colonisation, and terraforming.
Perfect matter replicators.
I have some other ideas as well, but those would be a start.
You're right to be sceptical until more data is presented, but saying no claim of progress is ever true is quite obviously a gross misrepresentation of our current reality. You are doing this on digital devices interconnected with millions of users ar staggering speed and latency. Every part of which are scientific claims.
Good reasons to omit details include brevity, legibility, pedagogy and scope.
Showing the supporting evidence for all steps in an evidence chain is simply not feasible, and we commonly have to accept that a certain presupposed level of knowledge as well as ambiguity is necessary. And much of the challenge is to be precise enough in the things that need precision.
Heat is electromagnetic radiation - photons, sound is mechanical displacement - phonons.
They mostly propagate the same due to being waves, in most other respects they are very different.
Heat convection is an entirely separate process where heat radiation is aided by the movement of the surrounding medium. Where it would otherwise heat up it's environment, convection keeps the environment from heating up. Compare coffee in a thermos (very little convection) to a cup you're blowing on (significant convection); more air movement - more cooling.
Also, destructive interference does not at all work like that.
Maybe a more useful analogy could be that waves have like walking animations, where in part of the animation they go up, and in another part they go down. Destructive interference happens when a wave in its' "up" phase crosses a wave in it's "down", meaning the resulting movement looks like nothing. The waves don't however interact in any way, and will continue on their way and on their own animation cycles.
The shifting and heating parts are technically true but require very specific circumstances, enough so that I'm more prone to believe it's another misunderstanding of the physics behind this. But I'll give you the benefit of the doubt.
I understand that this information is against your internal narrative, but a quick look at data for 2021 shows:
One in two women and one in five men felt unsafe walking alone after dark in a busy public place.
And data from 2022 shows 45% for the same measure.
As for harassment:
2022 - 55% of women 16-34 felt harassed
2021 - Three out of five, 60% felt harassed during the year.
Twice as many women reported being harassed as men, and several reported changing their behaviour because of harassment.
This is also echoed in international studies over multiple cultures. Women are much more often harassed than men, almost exclusively by men, and have more limited freedoms, expressions and rights than men.
This is not controversial, it is well established in study after study, there is an actual right answer to this, and it's not the one you're proposing.
How is it that you keep ignoring data when faced with it, and instead of presenting supportive data resort to arguing feelings and whataboutisms?
From a European perspective, the US centre-right are more conservative than the European fringe right. The European far right doesn't (typically) want to restrict abortion, sabotage education or reinstate child labor for example. And are mostly about increasing and militarizing police, disenfranchising minorities, and different schemes to control that only the right people get to vote.
I'd argue that the US centre right is actually as radical, or even more so than the European fringe right, they are certainly causing about the same commotion, but of course have much more power in the US.
I'd agree that there are some variation in the European far right. In contrast to Italy, Spain and Russia: German, French, UK, Nordic far right are not restricting abortion, but are doing most of the rest (northern European ones not as much dismantling welfare/healthcare as making it inaccessible to some, especially immigrants, trans, lgbt, etc).
For convenience sake let's say you have 2 identical lasers, one is blue and one is red. And you shine it on lead (so none of the light leaks through) until the lead doesn't heat up anymore. Would the temperature change at all between the different color lasers. It doesn't have to be red or blue, it could be microwave or x ray,...
@toboggonablaze is essentially correct, but let me try explain it in a slightly different way.
Lasers do a bunch of things to basically shoot a stream of photons at something. There's basically two ways you can affect how much energy comes out of a laser, you can make the stream denser (more photons per second) - called intensity, or you can increase the energy in each photon.
The weird part about photon energy is that higher energy photons are of a different "color", where red is lower than green, is lower than blue, is lower than gamma rays, etc.
So changing the color of a laser already means you've changed how much energy it can output.
Then there's another part of your question: how lead gets heated up. Different materials respond differently to different types/wavelengths of light, an example you might be familiar with is that glass panes let through visible light, but not the heat from the sun, or that water also is see through, but can easily be microwaved (by microwaves - low frequency light).
Basically, a material can be more or less "translucent" in certain frequencies. I'd like to look lead up for you, but Google isn't cooperating today. But basically, there are frequencies that lead will be more and less susceptible to.
That's probably not what you meant with the question, but if that's the application you want to use the laser for, you might want to take it into consideration.
So, in summary: color is energy, intensity is energy, you can change both independently, so your question doesn't quite make sense.
Also, different targets will heat differently, also not making it a fair comparison.
Instagram is profiting from several ads that invite people to create nonconsensual nude images with AI image generation apps, once again showing that some of the most harmful applications of AI tools are not hidden on the dark corners of the internet, but are actively promoted to users by social media companies unable or...
You might be fine with having erotic materials made of your likeness, and maybe even of your partners, parents, and children. But shouldn't they have right not to be objectified as wank material?
I partly agree with you though, it's interesting that making an image is so much more troubling than having a fantasy of them. My thinking is that it is external, real, and thus more permanent even if it wouldn't be saved, lost, hacked, sold, used for defamation and/or just shared.
What I find interesting is that for me personally, writing the fantasy down (rather than referring to it) is against the norm, a.k.a. weird, but not wrong.
Painting a painting of it is weird and iffy, hanging it in your home is not ok.
It's strange how it changes along that progression, but I can't rightly say why.
Ukrainian Sea Drones Penetrate Russian Navy’s Remaining Sea of Azov Safe Haven ( www.kyivpost.com )
What makes a good whetstone set? What sets should I avoid?
I'm looking for a better knife sharpener for my hard steel chef knife. I think whetstones are the way to go, but most of the sets I see are 4 double sided stones. Do I need that many stones?...
Scientists Find Plastic-Eating Fungus Feasting on Great Pacific Garbage Patch ( futurism.com )
cross-posted from: https://lemmy.ml/post/16488358...
US-Made M270 and HIMARS Execute First Cross-Border Strikes Since Biden Green Light ( www.kyivpost.com )
It’s not just boomers, young people are voting far right too ( www.politico.eu )
Ahead of the European election, striking data shows where Gen Z and millennials’ allegiances lie....
Ant smell ( mander.xyz )
I have a very powerful sense of smell.
Given the resources to accomplish it, what wildly impractical project would you finally pursue?
Most annoying feature ever ( lemmy.world )
Students’ Leaf Blower Suppressor To Hit Retail ( hackaday.com )
Now that google is going all in on ai what are some sites you plan on bookmarking. ( kbin.social )
Just curious since I think it is about to get a whole lot harder to search using google. hopefully this will signal the end of their monopoly.
[Thread, post or comment was deleted by the moderator]
Just How Dangerous Is Europe’s Rising Far Right? ( www.nytimes.com )
Does color change how hot a laser can get something?
For convenience sake let's say you have 2 identical lasers, one is blue and one is red. And you shine it on lead (so none of the light leaks through) until the lead doesn't heat up anymore. Would the temperature change at all between the different color lasers. It doesn't have to be red or blue, it could be microwave or x ray,...
Instagram Advertises Nonconsensual AI Nude Apps ( www.404media.co )
Instagram is profiting from several ads that invite people to create nonconsensual nude images with AI image generation apps, once again showing that some of the most harmful applications of AI tools are not hidden on the dark corners of the internet, but are actively promoted to users by social media companies unable or...
Is it true that addicts never stop being addicts, they just replace their addiction?
example: a drug addict alcoholic who discovers god and turns a teetotaler gay bashing abortion hating new born Christian....
Hilarious ( lemmy.ml )