piecat

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piecat ,

This post is an ad

piecat ,

That would be to be a huge balloon to do anything appreciable, both to your enemy and also the stockpile of waste you have

Tesla is recalling its Cybertruck for the fourth time to fix problems with trim pieces that can come loose and front windshield wipers that can fail | The new recalls each affect over 11,000 trucks ( apnews.com )

The company says in the documents that the front windshield wiper motor controller can stop working because it’s getting too much electrical current. A wiper that fails can cut visibility, increasing the risk of a crash. The Austin, Texas, company says it knows of no crashes or injuries caused by the problem....

piecat ,

Coming from the man who knows more about manufacturing than anyone on the planet

piecat ,

Damn, even fighter jets have an external override. They're even labeled for rescue workers.

https://lemmy.world/pictrs/image/259aef3d-a98d-472d-835c-ae33c1e946ae.jpeg

piecat ,

Yeah, but it's probably for insurance reasons.

If I want to get ozempic for aesthetic reasons, too bad. But if it is "medically necessary" then it is super easy

piecat ,

Nighthawkinlight just released a video on a material that accomplishes this that you could make at home.

https://youtu.be/Nqxjfp4Gi0k?si=4rEVK5DjNZCGc1Fi

piecat ,

Generative fill on a dummy layer, then apply 0% opacity

piecat ,

Film too, any trickery in the darkroom should be labeled because it cannot show which parts are real and which are not.

piecat ,

Since when did manufacturing equipment need an activation key? Are they talking about CNC mills? PLCs?

piecat ,

Right that's just the stock of old/obsolete/close-to-expiring munitions and equipment we're willing to spare.

piecat ,

Next generation? We don't want it either. We're being pushed features we don't need or want

piecat ,

Checksums, on the other hand, are designed to minimize the probability of collisions between similar inputs, without regard for collisions between very different inputs.[8] Instances where bad actors attempt to create or find hash collisions are known as collision attacks.[9]

https://en.m.wikipedia.org/wiki/Hash_collision#:~:text=Checksums%2C%20on%20the%20other%20hand,are%20known%20as%20collision%20attacks.

piecat ,

That can be for a few reasons...

In some cases you're tuning (or detuning) the antenna capacitively.

On other cases, like if your tv gets interference when you're standing in part the room, there may be standing waves causing interference, as the rf is bouncing around your room.

piecat ,

Depends. If the antennas were resonant dipoles placed some fraction of a wavelength away from each other (1/4 wave away), you may get some cancellation of the signal.

Look up the "yagi uda" antenna, it's the classic rooftop tv antenna. The elements are spaced by fractions of a wavelength to achieve directivity. One single element is driven, the others are just resonant lengths of wire.

piecat ,

Sorry, your comment doesn't make sense and doesn't seem correct to me.

Yes there is a capacitance, but capacitance isn't "voltage potential". Capacitance is a ratio of coulombs per volt. Anyway, that's beside the point.

There is capacitance and it's defined by geometry.

"The potential between you and the antenna affects the filter of the signal"

You're not adding potential to anything, nor are you affecting any filters.

Any capacitance you add will change the impedance of the resonant antenna. You get maximum power transfer when the impedance is matched.

Another way to look at it, you're changing the resonant frequency.

piecat , (edited )

... Was this written by ai

I'm an rf engineer and I swear it feels like I'm having a stroke reading your comments

piecat ,

  1. as the distance increases the capacitance reduces. But C=Q/V doesn't mean you're not inducing any potential into the antenna... You're adding to the load... C=ε*A/d is the equation that says capacitance will decrease with distance, but that isn't going to induce any voltage in this case.

  2. yes this is what I'm saying.

  3. in the very near field, conductive tissue, ie a body, will have Eddy currents. Your body has an ε term as well as σ. You can definitely load an antenna. The R term will dominate but there will be some effect on inductance.

A PR disaster: Microsoft has lost trust with its users, and Windows Recall is the straw that broke the camel's back ( www.windowscentral.com )

It's a nightmare scenario for Microsoft. The headlining feature of its new Copilot+ PC initiative, which is supposed to drive millions of PC sales over the next couple of years, is under significant fire for being what many say is a major breach of privacy and security on Windows. That feature in question is Windows Recall, a...

piecat ,

It's like some of the Pokemon games where it tells you what you did. Seriously amazing, but yeah needs to be FOSS and secure.

piecat , (edited )

Even for Wisconsin, UW is the system. There's UW Lacrosse, UW Milwaukee, UW Madison, UW Platteville, UW Whitewater...

piecat ,

Both GMOs and nuclear can be used to mitigate climate change too... :(

piecat ,

Fix the laws?

No. It's the GMOs who are wrong.

ChatGPT Answers Programming Questions Incorrectly 52% of the Time: Study ( gizmodo.com )

The research from Purdue University, first spotted by news outlet Futurism, was presented earlier this month at the Computer-Human Interaction Conference in Hawaii and looked at 517 programming questions on Stack Overflow that were then fed to ChatGPT....

piecat ,

My favorite is when I ask for something and it gets stuck in a loop, pasting the same comment over and over

https://lemmy.world/pictrs/image/1f5d573a-1f35-4f39-9b10-339eef86aa86.png

piecat ,

When you invest in a company, you make products and sell them to customers.

You mean, executives with "fiduciary responsibility" take extremely irresponsible actions to "maximize shareholder profits" and gut the company that produces those products such that the product is minimally viable, borderline shit, and might even kill the end user (Boeing, Tesla, GE, etc etc). Oh and jobs and the economy are on the line too, so that's great.

piecat ,

You're not making the gambling more productive, you're making the production worse.

piecat ,

Fucking it up for the rest of us

piecat ,

Based on how it works, (not how they say it works) you need a different geometry depending on the frequency. So it's only going to work at select rpm.

piecat , (edited )

Because that isn't how it works. I've been working on this idea in my spare time for a patent, for months. I have the CFD models to prove it. I learned ELMER and perfected the solvers and meshing process.

It grinds my gears that they stumbled upon it, get all the credit, and apparently don't know how it actually works.

Never been scooped before. But man it doesn't feel good.

piecat ,

It squashes the fundamental and certain harmonics and fractional harmonics.

Since I probably won't be able to patent the idea myself anymore, maybe I'll publicly disclose.

piecat ,

No no no, that's not true privatization. True privatization would fix all the problems

piecat ,

It's definitely morally complicated. Like paying life changing money for medical testing or organ harvesting.

On one hand, yeah he's making a sacrifice for human advancement. On the other hand...

piecat ,

Makes it harder for news to spread, documenting warcrimes and genocide, etc

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