casualphysics (u/casualphysics)

casualphysics commented on Slow Down chillphysicsenjoyer.subst... · Posted by u/ntnbr

alphawhisky · 5 months ago

This reads like it was written by a childless 30 year old trust fund baby. Considering that his entire philosophy centers around doing things he likes doing, how does this apply to the average person? How can this article be digested into useful fuel for thought or action for normal people? It can't, and that might be the takeaway.

casualphysics · 5 months ago

Author here, thank you for the feedback. I am very fortunate to be able to do stuff that I like, but I also aspire to be useful. It pains me that I am not reaching that standard yet, I will think more about how to improve.

casualphysics commented on Frying Eggs and Air Quality Tests chillphysicsenjoyer.subst... · Posted by u/crescit_eundo

ssimpson · 6 months ago

Not sure about yours, but many extractor (vent) fans will just suck the air over a very loose filter and throw it back into the room. Many in the US are part of the over stove microwave and rarely vent at more than 250cfm (~7 m3/min) where specific vent fans that go outside can move upwards of 700-800cfm (20m3/min).

casualphysics · 6 months ago

Author here. I really want to figure out if my extractor fan is actually doing anything good.

casualphysics commented on Frying Eggs and Air Quality Tests chillphysicsenjoyer.subst... · Posted by u/crescit_eundo

mttch · 6 months ago

Two things, no oil as others have suggested but also frying eggs does not require a very high temperature, around 150 Celsius and your eggs don’t look particularly browned (which is how I prefer them too) so you aren’t exercising the Maillard reaction, which generates the PM2.5. Try again with browning a fatty cut of beef or pork steak in oil which require higher temperatures where lots of browning is occurring and you are also closer to the smoke point of the oil.

casualphysics · 6 months ago

I used oil but not a lot. I didn't know about the Maillard reaction, and this is good info. Thank you, and I'll do this for next time. I want to figure out an easy way to make PM2.5 to test my air purifier.

casualphysics commented on Frying Eggs and Air Quality Tests chillphysicsenjoyer.subst... · Posted by u/crescit_eundo

Tade0 · 6 months ago

Those eggs appear to be on a non-stick pan, so without oil.

Try cooking with oil and you'll see PM levels go to enormous heights.

casualphysics · 6 months ago

I actually did cook this with oil

casualphysics commented on Frying Eggs and Air Quality Tests chillphysicsenjoyer.subst... · Posted by u/crescit_eundo

ur-whale · 6 months ago

Was this on an electric or a gas stove?

Now if we're cooking with gas (as the east Germans use to say in the 80's), that generates quite some PM2.5 in an of itself.

Also, anyone cooking eggs without getting to the Maillard reaction (or for that matter, with oil instead of butter) should never again legally allowed to approach a frying pan :D

casualphysics · 6 months ago

Author here. I have an induction hob! Unfortunately, I use oil :)

casualphysics commented on Frying Eggs and Air Quality Tests chillphysicsenjoyer.subst... · Posted by u/crescit_eundo

graeme · 6 months ago

I've tested with oil. You don't see a large spike unless something is blackened or the oil smokes

Biggest generator of pwm during cooking is when things actually burn. Which can be just a very tiny portion of the food, like one black speck that came off and heated extra. This produces more pwm than the mass of oil and food.

casualphysics · 6 months ago

Yeah, I suspect its the burning that is more effective.

casualphysics commented on Frying Eggs and Air Quality Tests chillphysicsenjoyer.subst... · Posted by u/crescit_eundo

infecto · 6 months ago

Frying would require some sort of oil or fat and it’s hard to tell but the pan looks clean. Anything with oil will dramatically bump up those numbers. It’s intuitive just cleaning your kitchen, grease being cooked travels.

My one wish is the west adopted Chinese style kitchens. Even in new condo builds the kitchen will be isolated in a room you can close off, with an exterior wall and powerful exhaust vents. I always found it perplexing how ok folks are with what feels like cooking food in their bedroom.

casualphysics · 6 months ago

Hey, the author here! Thanks for your suggestion. I did use oil here, but not alot. I should measure it next time. I'm trying to figure out how to synthetically generate uniform particles for testing some DIY filters I'm making, and just frying stuff in more and more oil seems like a good bet.

u/casualphysics

KarmaCake day2September 20, 2025View Original