this post was submitted on 02 Dec 2024
1820 points (100.0% liked)
Microblog Memes
6659 readers
2495 users here now
A place to share screenshots of Microblog posts, whether from Mastodon, tumblr, ~~Twitter~~ X, KBin, Threads or elsewhere.
Created as an evolution of White People Twitter and other tweet-capture subreddits.
Rules:
- Please put at least one word relevant to the post in the post title.
- Be nice.
- No advertising, brand promotion or guerilla marketing.
- Posters are encouraged to link to the toot or tweet etc in the description of posts.
Related communities:
founded 2 years ago
MODERATORS
Won't homeless people just sleep on the ground now?
You seem to assume that any logic or reason was used in the decision making that led to this action. But I assure you, as soon as racism, classism, or any other form of bigotry enters the process, any reason left jumps out of the window.
Not if we can get some proper sidewalk spikes.
The bare ground is way colder than a bench, since air is a good thermal insulator.
Homeless people are desperate. They'll sleep outside on the fucking pavement if it has an overhang and nobody bothers them. A place with walls and heating is fucking precious to em.
Is that how that works? I'm not trying to be antagonistic or anything, I just heard the opposite is true when it comes to why bridges develop ice sooner than typical roadways do; because the ground holds more heat than the cold air does
The reason bridges form ice before roads is that they are exposed to cold air on all sides and have lower total thermal mass, so conduction from the bridge to the air allows the temperature of the bridge surface to drop faster. The ground has nearly infinite thermal mass, and it takes a long(er) time for ambient air temperature to affect the surface temperature.
When you say "the ground holds more heat" you're talking about that thermal mass. The temperature of the air is colder than the temperature of the ground, so yes from that perspective it "holds more heat." But the temperature of a human is much much higher than the ground, and conduction is an extremely effective way to pull heat out of a human.
Yep! Slept on benches, chairs, and the ground when I was homeless. The ground is the worst for temperature (I'm technically homeless again, but at a shelter in a bed).
I hope things turn around for you soon.
It's essentially the same thing, just on opposite ends. the ground leeches heat from warm bodies because it's big and cool. A bridge freezes first because there isn't ground that also has to freeze. Both are insulated from the ground, but one is hotter and one is colder than the ground temperature.