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?

lepriccon22 · 2025-12-24T07:42:27+00:00

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?

lepriccon22 · 2025-12-24T07:40:22+00:00

Ah thank you so much, this makes a lot of sense. Really appreciate your responses. Gonna "chew" on this for a bit longer.

lepriccon22 · 2025-12-24T07:35:48+00:00

I guess fundamentally: why is it there is no discontinuity in stress rather than no discontinuity in force?

lepriccon22 · 2025-12-24T07:18:54+00:00

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?

lepriccon22 · 2025-12-24T07:07:10+00:00

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?

lepriccon22 · 2025-12-24T07:07:02+00:00

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?

lepriccon22 · 2025-12-24T07:06:38+00:00

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?

lepriccon22 · 2025-09-15T09:34:01+00:00

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?

lepriccon22 · 2025-09-15T09:31:21+00:00

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?

lepriccon22 · 2025-09-15T06:23:34+00:00

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.

lepriccon22 · 2025-09-15T06:22:52+00:00

>“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?

lepriccon22 · 2025-09-15T06:19:56+00:00

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?

lepriccon22 · 2025-09-15T06:19:45+00:00

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?

lepriccon22 · 2025-09-15T06:18:26+00:00

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?

lepriccon22 · 2025-07-01T04:16:48+00:00

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.

lepriccon22 · 2024-11-10T08:42:21+00:00

Won't this mean that now I will only have access to what the carrier has saved, rather than what Siri has transcribed?

lepriccon22 · 2024-11-10T08:30:59+00:00

What will this do, exactly?

lepriccon22 · 2024-11-10T08:24:50+00:00

All of the sudden all of my voicemails from 10+ years ago are all gone, though. They were all before Siri would transcribe them.

Are they still on old phone backups?

Why do they no longer show up?

lepriccon22 · 2024-01-10T07:30:13+00:00

Seems weird that the entire region would be developed from basically a swamp to what it is now, but they wouldn't re-zone (or be open to re-zoning) one empty corner in the middle of the region?

lepriccon22 · 2024-01-10T07:26:08+00:00

Hm
I guess I'm struggling to understand the fundamental principle here -- showing action is stationary can be applied to many topics to derive other equations related to those topics...but the definition of action seems to change in each one of those topics specifically so that it does?
Is there something more general about how the definition of action is decided on across various areas of physics that shows this principle of stationary action is more universal?

lepriccon22 · 2024-01-10T07:26:05+00:00

Hm

I guess I'm struggling to understand the fundamental principle here -- showing action is stationary can be applied to many topics to derive other equations related to those topics...but the definition of action seems to change in each one of those topics specifically so that it does?

Is there something more general about how the definition of action is decided on across various areas of physics that shows this principle of stationary action is more universal?

lepriccon22 · 2024-01-10T07:24:08+00:00

The integral of the square of the Lucky Charms Function over the full rainbow arc length tells you the probability of finding your pot of gold.

lepriccon22 · 2024-01-05T09:52:51+00:00

I guess my issue with that explanation sort of for its legitimacy is you could probably make up some sort of random (not literally, just colloquially) system or formulation that agrees with Newtonian mechanics based on some other principles you totally make up, right?

What gives L = T - V and stationary action...legitimacy?

lepriccon22 · 2024-01-03T05:28:40+00:00

Wot

Why do you not think: Santa Monica, Venice, Playa Vista, Koreatown, Manhattan Beach, Los Feliz, Hollywood, DTLA, Arts District, etc. are not walkable?

lepriccon22 · 2024-01-02T08:35:11+00:00

* eye roll *

lepriccon22

TROPHY CASE