Recent comments in /f/askscience

przyssawka t1_j1jgskg wrote

Reply to comment by [deleted] in What specifically about ginger/menthol/wasabi causes one's sinuses to open? by Bartendiesthrowaway

The confusion may be due to poorly written wikipedia entry on conchae, which is extremely inconsistent:

>Conchae (/ˈkɒnkiː/), also called a nasal turbinate or turbinal,[1][2] is a long, narrow, curled shelf of bone that protrudes into the breathing passage of the nose

followed immediately by:

>Conchae are composed of pseudostratified columnar, ciliated respiratory epithelium with a thick, vascular, and erectile glandular tissue layer.

I'm a head and neck surgeon and I've never heard anyone in the field make a distinction between the mucosa covering the concha and the bony part, mostly because it's the mucosal part that's important for things like FESS procedure (outside of cases of Concha Bullosa).

It's similar to the labyrinth of the inner ear. Can mean the petrous part alone but it's commonly used to refer to what it contains as well. Anatomically the whole structure is called a concha and that includes the mucosa.

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przyssawka t1_j1jfngc wrote

Reply to comment by kbolser in What specifically about ginger/menthol/wasabi causes one's sinuses to open? by Bartendiesthrowaway

Conchae are more than just the scrolls of bone in anatomy. A popular outpatient procedure conchoplasty (also called turbinoplasty) removes (or simply destroys) the mucosal part of conchae usually without touching the bone itself (though "breaking" the conchae is sometime a part of the procedure)

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komor555 t1_j1je8zi wrote

Reply to comment by mayonnace in Are people in the international space station experiencing time faster than us? by [deleted]

If you'd travel at the speed of light, time would stop for you relative to the universe completely. Accelerating faster you'd be going back in time, in theory. I don't know the relationship between time and light, but I suspect that light has to follow the same rules as everything else that has a mass and travels.

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Feminist_Hugh_Hefner t1_j1jduhc wrote

Reply to comment by przyssawka in What specifically about ginger/menthol/wasabi causes one's sinuses to open? by Bartendiesthrowaway

interesting study.

a minor point, "patency" is the "openness" of the airway, without regard to how it is measured. The authors use "subjective nasal patency" to discuss the reported sensation and just say "airflow" when they are talking about flow measured by rhinomanometry

good find and very interesting points in there, including the lack of understanding on where, exactly, cold sensory areas are located, and the question that menthol may have a direct effect on lowering respiratory drive

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dave200204 t1_j1jd1yf wrote

Reply to comment by OverJohn in Are people in the international space station experiencing time faster than us? by [deleted]

Just looked it up and you're right. It was 0.02 seconds. 748 days aboard Mir over several missions. https://www.amnh.org/exhibitions/einstein/time/time-travel#:~:text=Cosmonaut%20Sergei%20Avdeyev%20spent%20a,he%20never%20traveled%20in%20space.

There is also a YouTube video about it on the "Half As Interesting" channel.

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komor555 t1_j1jcu8t wrote

Reply to Are people in the international space station experiencing time faster than us? by [deleted]

No.

They are orbiting Earth, 16 times per day. Earth is orbiting the sun. While we on earth take a year to make it around earth which is around 150 mil km, the ISS is 400 km above us, and travels 16 times per 24h around Earth, equals 700 000 km every day, multiplied by 365 is 256 mil km every year, 156 million km minus 256 mil km = the ISS makes 100 million kilometers more distance every 1 full Earth's orbit around Sun.

According to general relativity theory, the time for us goes faster on earth relative to ISS, while the ISS time pass is slightly slower relative to earth. But it's really a small difference. That's why I didn't bother to take ISS rotational movement and direction of travel against light direction into account.

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