this post was submitted on 27 May 2026
313 points (99.7% liked)
hmmm
8069 readers
645 users here now
For things that are "hmmm".
Rule 1: All post titles except for meta posts should be just plain "hmmm" and nothing else, no emotes, no capitalisation, no extending it to "hmmmm" etc.
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Autoignition temperature of natural gas is above 500c. Need a spark, or enough heat, there could even be a leak and this not be enough heat to ignite.
I’m pretty sure if it’s red hot it’s close to if not over 500°C but I guess it depends on the metal.
At least according to this Wikipedia article. https://en.wikipedia.org/wiki/Red_heat
So when you say "Autoignition", then ignition of what? For natural gas to "ignite", as in burn or in other words oxidize, there need to be an oxidizer present.