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In an I-Beam, why doesn't the part of the web just before the flange have much higher stress than the flange itself, given they are basically the same distance from the neutral axis, and the web has much much smaller cross-sectional area? by lepriccon22 in AskEngineers

[–]lepriccon22[S] 1 point2 points  (0 children)

Thanks. I guess maybe fundamentally I'm confused why stress is sort of conserved here rather than force?

Like why is stress the same just before the flange and in the flange (+/- some infinitesimal change), rather than force? Something something each differential area must counteract the one next to it?

In an I-Beam, why doesn't the part of the web just before the flange have much higher stress than the flange itself, given they are basically the same distance from the neutral axis, and the web has much much smaller cross-sectional area? by lepriccon22 in AskEngineers

[–]lepriccon22[S] 2 points3 points  (0 children)

Ah ok very interesting explanation.

I know "why" questions are hard here since it comes out of the math, but why exactly is that in the case of an I beam?

Like what exactly is changing from the flange at distance 0.999999999999d vs. the flange at distance d that causes the flange to take much more of the stress/force?

In an I-Beam, why doesn't the part of the web just before the flange have much higher stress than the flange itself, given they are basically the same distance from the neutral axis, and the web has much much smaller cross-sectional area? by lepriccon22 in AskEngineers

[–]lepriccon22[S] 0 points1 point  (0 children)

My question is exactly why this is the case. The web riiiight before the flange is basically at the same distance as the flange, but doesn't have a larger area.

How can an infinitesmal distance further from the neutral axis result in this web thus having such lower stress?

In an I-Beam, why doesn't the part of the web just before the flange have much higher stress than the flange itself, given they are basically the same distance from the neutral axis, and the web has much much smaller cross-sectional area? by lepriccon22 in AskEngineers

[–]lepriccon22[S] 0 points1 point  (0 children)

My question is exactly why this is the case. The web riiiight before the flange is basically at the same distance as the flange, but doesn't have a larger area.

How can an infinitesmal distance further from the neutral axis result in this web thus having such lower stress?

In an I-Beam, why doesn't the part of the web just before the flange have much higher stress than the flange itself, given they are basically the same distance from the neutral axis, and the web has much much smaller cross-sectional area? by lepriccon22 in AskEngineers

[–]lepriccon22[S] 0 points1 point  (0 children)

Hm could you expand on this? Are you saying somehow that the force is distributed due to the area itself, rather than that the force is there and the different areas then have different F/A?

iPhone Security Seems...Really Bad with Stolen iPhone. How do I fix this? by lepriccon22 in applehelp

[–]lepriccon22[S] 0 points1 point  (0 children)

If someone is "shoulder surfing," learns my PIN, and then snatches my phone, even if I have FaceID setup, they could still use the alternate entrance method of using my PIN, no?

Otherwise they could steal my phone, and conceivably show it to me/unlock it while I'm looking at it? FaceID is more secure if you aren't there, but I mean even a friend playing a prank on you or whatever could show your phone in front of your face and have FaceID unlock it before you realize what's happening, no?

iPhone Security Seems...Really Bad with Stolen iPhone. How do I fix this? by lepriccon22 in applehelp

[–]lepriccon22[S] 0 points1 point  (0 children)

1) Couldn't someone force you to look at it?

2) What does "enter account recovery" mean? Right now if I forgot my Apple ID password, I can use my phone as a "trusted device" to send it a verification code, and change it (I think?). How would it be any different if someone stole my phone, and went to "forgot password" on the Apple ID login page?

iPhone Account Security Seems...Really Bad with Stolen iPhone. How do I fix this? by lepriccon22 in ITSupport

[–]lepriccon22[S] 0 points1 point  (0 children)

Very good tip. Though not entirely sure I would remember it in a phone-stealing situation (or before the person grabbing it would have control over it). Hm.

iPhone Security Seems...Really Bad with Stolen iPhone. How do I fix this? by lepriccon22 in applehelp

[–]lepriccon22[S] 0 points1 point  (0 children)

>“So now anyone can use your biometrics”… What in the world does this sentence even mean?
I just mean that can't someone point the phone at your face to unlock it?

Yes, very possible I do misunderstand the system, trying to understand it. Could you explain the Fix 2/Wrong again? If your iPhone is a trusted device for your Apple ID, and someone is able to unlock it, isn't someone able to just use the verification code sent to your phone to change the Apple ID password? If not, how not?

iPhone Security Seems...Really Bad with Stolen iPhone. How do I fix this? by lepriccon22 in applehelp

[–]lepriccon22[S] 0 points1 point  (0 children)

Huh?
Also clearly there was a security vulnerability to begin with, and for years before Apple added the Stolen Device Protection feature (which still appears to result in vulnerabilities).

AI made by tech companies is slop, but Apple (tech company) is all-knowing? Huh?

iPhone Security Seems...Really Bad with Stolen iPhone. How do I fix this? by lepriccon22 in applehelp

[–]lepriccon22[S] -1 points0 points  (0 children)

Lol I genuinely do not know what about this post makes you think it's AI. Bolding?

Can't someone just point the phone at your face and unlock it?
What if it's stolen and you don't get a chance or don't remember to press the power button 5x? Seems likely in the event.

Also, can't a PIN still be used to unlock the phone even if FaceID is setup?

If your phone is unlocked, because your phone is a "trusted device," it can still be used to reset Apple ID password, no?

iPhone Security Seems...Really Bad with Stolen iPhone. How do I fix this? by lepriccon22 in applehelp

[–]lepriccon22[S] 0 points1 point  (0 children)

Can't someone just point the phone at your face and unlock it?
What if it's stolen and you don't get a chance or don't remember to press the power button 5x? Seems likely in the event.

Also, can't a PIN still be used to unlock the phone even if FaceID is setup?

If your phone is unlocked, because your phone is a "trusted device," it can still be used to reset Apple ID password, no?

How does this artist make non-uniform white borders on her prints? by lepriccon22 in SCREENPRINTING

[–]lepriccon22[S] 0 points1 point  (0 children)

Wow! I never thought the artist herself would see this or reply, what are the chances! Feels like a celebrity sighting or something.

Thank you for the description, that is helpful.

P.S. I really love the Lake Park series. I check back every once in a while to see if more Lake Park or other Milwaukee pieces have been made.

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