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When an object enters the atmosphere it burns up from compression, not friction.

Posted on 7/25/22 at 10:05 pm
Posted by GumboPot
Member since Mar 2009
118834 posts
Posted on 7/25/22 at 10:05 pm
For example when a meteor enters the atmosphere the meteor is heating up due to air compression not friction. If the meteor is made of oxidizable material and as it heats up from the compression then you see the meteor burn up.

It’s the same principle behind fire pistons:



I thought it was friction all this time until a physics video popped up on my YouTube feed.
Posted by When in Rome
Telegraph Road
Member since Jan 2011
35543 posts
Posted on 7/25/22 at 10:08 pm to
Posted by Tiger Chemist
Member since Nov 2009
2872 posts
Posted on 7/25/22 at 10:09 pm to
Yep. The system (meteor) is doing work (compression) on the surroundings (atmosphere).
Posted by OldSouth
Folsom, LA
Member since Oct 2011
10940 posts
Posted on 7/25/22 at 10:12 pm to
That’s honestly fascinating. Thanks for sharing.
Posted by LegendInMyMind
Member since Apr 2019
54293 posts
Posted on 7/25/22 at 10:13 pm to
Physics isn't real.
Posted by When in Rome
Telegraph Road
Member since Jan 2011
35543 posts
Posted on 7/25/22 at 10:16 pm to
Physics is real. Birds are not.
Posted by jrodLSUke
Premium
Member since Jan 2011
22178 posts
Posted on 7/25/22 at 10:18 pm to
Isn’t the friction causing the compression?
Posted by Gaggle
Member since Oct 2021
5619 posts
Posted on 7/25/22 at 10:19 pm to
What if it's a big thicc rock? I like 'em a little meteor
Posted by GumboPot
Member since Mar 2009
118834 posts
Posted on 7/25/22 at 10:19 pm to
I’m just irritated that I’ve been told it was due to friction my entire life and never questioned it.
Posted by Obtuse1
Westside Bodymore Yo
Member since Sep 2016
25650 posts
Posted on 7/25/22 at 10:23 pm to
quote:

I thought it was friction all this time until a physics video popped up on my YouTube feed.



Well...
Posted by GumboPot
Member since Mar 2009
118834 posts
Posted on 7/25/22 at 10:26 pm to
quote:

Isn’t the friction causing the compression?


The honest answer is IDK. But I can speculate. The friction enables compression to occur but most of the heat is coming from compression. It’s likely a combination of both but compression is likely the biggest contributor to the total heat gained .

Posted by dstone12
Texan
Member since Jan 2007
30302 posts
Posted on 7/25/22 at 10:26 pm to
Confused.

Doesn’t the meteor break up due to outer layers being worn away?


Enters as a basketball but ends up as a golf ball or not even making it to the earths surface?
Posted by GumboPot
Member since Mar 2009
118834 posts
Posted on 7/25/22 at 10:29 pm to
quote:

Well...


LINK
Posted by Kafka
I am the moral conscience of TD
Member since Jul 2007
142023 posts
Posted on 7/25/22 at 10:31 pm to
Posted by GumboPot
Member since Mar 2009
118834 posts
Posted on 7/25/22 at 10:32 pm to
quote:

Doesn’t the meteor break up due to outer layers being worn away?


Only if the meteor is made of oxidizable materiel like iron. When iron gets red hot it oxidizes quickly. That’s why the space shuttle is covered in non-oxidizable ceramic tiles.
Posted by Chucktown_Badger
The banks of the Ashley River
Member since May 2013
31138 posts
Posted on 7/25/22 at 10:34 pm to
This is from a NASA website

quote:

Have you ever seen a meteor shower, where meteors burn up and streak across the sky? Some people call them shooting stars. Those meteors are burning up in the mesosphere. The meteors make it through the exosphere and thermosphere without much trouble because those layers don’t have much air. But when they hit the mesosphere, there are enough gases to cause friction and create heat.
Posted by RockinDood
Member since Aug 2020
918 posts
Posted on 7/25/22 at 10:35 pm to
Durr durr it burns up cuz it hits the firrmermennmrnent!
Posted by Gaggle
Member since Oct 2021
5619 posts
Posted on 7/25/22 at 10:36 pm to
Creating meteorite hoax to perpetuate space fiction and hide flat earth

1) call fire in the sky meteorites that burned
2) call empty holes like sinkholes meteor craters. Find any rock whatsoever around crater and call it meteorite
3) call the 5-10 pieces of small indiscernible airplane debris whose impact is witnessed per year meteorites
4) call military weapons testing meteorites
Posted by Korkstand
Member since Nov 2003
28708 posts
Posted on 7/25/22 at 10:38 pm to
quote:

Isn’t the friction causing the compression?
It's the compression causing friction between molecules, producing heat.
Posted by GumboPot
Member since Mar 2009
118834 posts
Posted on 7/25/22 at 10:40 pm to
Found this:

quote:

What you’re seeing is not smoke, or burning particles. As a meteoroid (the actual solid chunk of material) blasts through the atmosphere, it violently compresses the air, heating it up hugely (note this isn’t due to friction, but compression; like when a bicycle pump heats up as you use it). The heat is so intense it ionizes the gases, stripping electrons from their parent atoms. As the electrons slowly recombine with the atoms, they emit light—this is how neon signs glow, as well as giant star-forming nebulae in space.


LINK

I’m going with compression. It just makes more sense.
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