What is the newest installment of 'Random Thoughts' on Physics Forums?

[BillTre]

Strange setup in my friend's place. He uses keys to _ exit_ his apartment.

This has be used as an anti-theft strategy.
Thief needs a key to leave through the door with your stuff.

 

[jack action]

Having to use a key for that is wrong. It should be as simple as possible.

How is turning a key - that is already in - more complicated than turning a deadbolt?

 

[berkeman]

How is turning a key - that is already in - more complicated than turning a deadbolt?

Key can break off. Or it could be the wrong key...

 

[WWGD]

Why doesn't someone come up with an app to find parking spots in mega parking lots in shopping centers? Maybe the cost of all the semdors, and relaying data, requiring WiFi?

 

[pinball1970]

How is turning a key - that is already in - more complicated than turning a deadbolt?

Yes sounds simple enough but when the place is hot full of smoke, no vision, you do not want to be grasping for a small key.

 

[fresh_42]

Why doesn't someone come up with an app to find parking spots in mega parking lots in shopping centers? Maybe the cost of all the semdors, and relaying data, requiring WiFi?

Exists. Not an app, but I know at least two parking lots with according traffic lights: green for available slots, and red for occupied sections.

 

[WWGD]

Exists. Not an app, but I know at least two parking lots with according traffic lights: green for available slots, and red for occupied sections.

It would be great if it could be applied city-wide. I'd heard one of the main sources of traffic in L.A was cars going about looking for parking spaces.

Wonder, though, if the law of " If you build it, they will come" applies to parking spaces, as it applies to road construction.

 

[WWGD]

Exists. Not an app, but I know at least two parking lots with according traffic lights: green for available slots, and red for occupied sections.

Wonder if it uses some sensors or just basic counting. If you know you have n spots, you can subtract 1 for every ticket issued by the machine,and add 1 each time someone leaves. Then you get green when $n\geq 1$, and red for $n=0$.

 

[fresh_42]

Wonder if it uses some sensors or just basic counting. If you know you have n spots, you can subtract 1 for every ticket issued by the machine,and add 1 each time someone leaves. Then you get green when $n\geq 1$, and red for $n=0$.

Those I know use simple counting mechanisms, pre-AI, and pre-camera detection. E.g. the parking lot at the airport has a ticket machine with a boom gate for every 60 cars or so per parking section. It counts. You can see free and occupied sections on your way. I wonder how the one at the university hospital works. It has lights on every floor but only a single boom gate at the entrance. But I can't remember having seen cameras.

 

[Borg]

We have something similar in my area. Sensor on the parking spot with an indicator light above. Just look for a green light.

 

[fresh_42]

We have something similar in my area. Sensor on the parking spot with an indicator light above. Just look for a green light.

Ah! Sensors that is!

 

[WWGD]

We have something similar in my area. Sensor on the parking spot with an indicator light above. Just look for a green light.

Thing is, if it's a parking lot giving tickets, if there's only one spot available, it may still allow two cars in, one will end up without a spot.

 

[berkeman]

Why doesn't someone come up with an app to find parking spots in mega parking lots in shopping centers? Maybe the cost of all the semdors, and relaying data, requiring WiFi?

There is indeed an app for that. I don't know if it got past the Beta testing stage, but it has been worked on as a commercial application. I'll see if I can find it...

 

[WWGD]

There is indeed an app for that. I don't know if it got past the Beta testing stage, but it has been worked on as a commercial application. I'll see if I can find it...

Thank you. It brings to mind an old post about the difference between electric and electronic, the latter involving a control system, IIRC/IIUC.

 

[berkeman]

Hmm, after a quick search, I think the app I'm thinking of was just in development at the time. I think my company helped them with some networking issues, and they were using multiple cameras per parking area/garage to be able to recognize open spots. It looks like it was not commercialized. The closest thing I found was this, which I think is more for city street parking...

https://spothero.com/

 

[WWGD]

Kind of weird, noticed how there are several last names around the animal " Wolf". I remember : Volpe, Lupo, Wolf itself, Wulf, Wolff, Lobo. Likely more in languages I don't speak.

 

[LCSphysicist]

I joined this forum years ago at the beginning of my undergraduate program. Now, I am almost graduated. Sometimes, I think about where the other students and users who joined with me are (mainly, one genius boy that i can't renember the user, but people will know who i am talking about).

 

[pinball1970]

I joined this forum years ago at the beginning of my undergraduate program. Now, I am almost graduated. Sometimes, I think about where the other students and users who joined with me are (mainly, one genius boy that i can't renember the user, but people will know who i am talking about).

Nice you have been here the whole time.

 

[WWGD]

I joined this forum years ago at the beginning of my undergraduate program. Now, I am almost graduated. Sometimes, I think about where the other students and users who joined with me are (mainly, one genius boy that i can't renember the user, but people will know who i am talking about).

You may be referring to @WannabeNewton
Or similar name. I miss @zoobyshoe. I checked his avatar and he last posted in 2017.

 

[LCSphysicist]

You may be referring to @WannabeNewton
Or similar name. I miss @zoobyshoe. I checked his avatar and he last posted in 2017.

Actually, I have remembered the username. Ethotepi? Something like that. The users you mentioned aren't near my age, but i do remember the first one.

 

[WWGD]

Actually, I have remembered the username. Ethotepi? Something like that. The users you mentioned aren't near my age, but i do remember the first one.

The ones I mentioned join in the 2000-2010 era, and were active through around 2018. Notice PF was started by Greg B in 2001.

 

[WWGD]

My friend complains his wife, who's around a foot shorter than him and some 100 lbs lighter, expects him to eat the same amount of food as her. I agree with him, though I can't think of the multiple by which his amount should be larger, but it certainly should be larger.

 

[Borg]

Actually, I have remembered the username. Ethotepi? Something like that. The users you mentioned aren't near my age, but i do remember the first one.

Probably Etothepi (E to the pi)?

 

[WWGD]

I think it's @etotheipi

 

[jack action]

Actually, I have remembered the username. Ethotepi? Something like that. The users you mentioned aren't near my age, but i do remember the first one.

It was @etotheipi, it is now @ergospherical and still active as of last month.

 

[gmax137]

this reminds me, I have been wondering about @anorlunda , have not seen any posts from him in a while now. Checking, I see his last post was in February. Hope he's OK!

 

[WWGD]

How about @zoobyshoe or @WannabeNewton?
They last posted in 2017, 2018 respectively. Any one know what happened to them?

 

[berkeman]

this reminds me, I have been wondering about @anorlunda , have not seen any posts from him in a while now. Checking, I see his last post was in February. Hope he's OK!

He replied to my e-mail and says he is doing fine and thanks for the concern. He has found a new passion at some specialized websites, hence the reduced participation here at PF.

 

[Frabjous]

found a new passion at some specialized websites

Interesting euphemism

 

[berkeman]

Interesting euphemism

No, no, no. Not *that* kind of website... Sheesh!

 

[fresh_42]

I have no problem watching American shows, even the propaganda TV from Bellisarius. But when they act like they are in Europe, it's almost unbearable. It is always so entirely wrong. It really hurts.

 

[gmax137]

I have no problem watching American shows, even the propaganda TV from Bellisarius. But when they act like they are in Europe, it's almost unbearable. It is always so entirely wrong. It really hurts.

The ones when they act like they're in the US are pretty wrong too.

 

[Astronuc]

 

[WWGD]

I was asked whether it was possible to design a roulette with the numbers 0 through 31, so that consecutive numbers add to a square. All I could think is to draw a graph with vertices numbered 0 through 31, and drawing an edge between vertices vi, vj , if i+j is a square. And then see if there's a subcircuit spanning all vertices. But I'm too lazy to look up if that is an Eulerian or Hamilton inn circuit, and the conditions needed for their existence in the given graph.

 

[fresh_42]

13 - 29
What a shame!