fliguana

fliguana t1_j0udn7l wrote

>Quick note - it is not the speed of sound in the gas that affects a person's voice, it is the density of the gas that affects resonance.

Air density is lower by half (at least) at mount Everest. I don't remember mountain climbers having funny voices at altitude.

Are you sure about your density statement?

2

fliguana t1_j0sm8t8 wrote

Good point. One can transfer gas into lungs by burp-inhaling (don't recommend).

In that case, methane dissolves in cold water very well, forming hydrate ice. BP's Deep Horizon oil platform felt the power of hydrates seconds before exploding.

7

fliguana t1_j0sl9zp wrote

>Also because it reacts with water to form carbon acid which affects the taste of beverages

Not in a good way though.

"Soda" is called that because most carbonated bevs contain baking soda to compensate.

There is one common drink (seltzer?) that does not have soda.

4

fliguana t1_j0pygtl wrote

CO2 is used for fizz because it dissolves in water extremely well and mostly safe. Speed of sound in CO2 is almost 20% lower than air's, if would be noticeable if it worked.

Having gas in your stomach will only change the tone of your burps. When talking, the voice box and resonating cavities almost immediately filled with gas from the lungs, replacing what was there.

Tl;dr: not possible, foreign gas needs to be in the lungs to affect tone of voice.

232

fliguana t1_ixwq0dy wrote

>For pretty much all important considerations, the only number you need to know is a planet's surface gravity. This will govern such things as the escape velocity

Incorrect. Two planets with identical surface gravity can have different escape velocities.

Simplification is good to a point, dumbing down leads to errors.

2

fliguana t1_ixurxma wrote

"gravity" (field) of the planed is determined by its mass, nothing else.

The weight of an object is determined by all gravity fields and acceleration of its motion.

Solar gravity can be detected on earth, because tides are higher during new/full moon events. But acceleration plays even greater role, objects in equator weigh less than those on poles.

2

fliguana t1_ixp4v3i wrote

Solved with caveat - new math symbols were introduced, iirc. Could just call the area of the grazing goat "Ņ", much like we do Ļ€.

That's the problem with the Poincare conjecture solution as well: a new area of math was developed just for it.

There are probably 10-100 people in the world who can follow Perelman's proof, and fewer who are qualified to find flaws in it.

Offloading interesting problems to AI will make the problem worse, there will be a lot of "trust me, I am a computer* moments with AI

4

fliguana t1_ixb2qxi wrote

Similar bullets leaving the same barrel will have similar markings/scrapes, as they are forced trough the slightly smaller barrel.

Cleaning the barrell should not make a difference, but damaging it with hard substance (sand, aluminum oxide, silicone carbide, diamond dust) would change the barrels fingerprint.

Since barrels are replaceable and are not regulated, replacing the barrell is much easier than messing with it.

17

fliguana t1_ixb01he wrote

Water expands very little with temp, but gases do.

A feverish animal with fart bubbles inside will have higher buoyancy than identical colder animal.

Fart jokes aside, blubber in marine animals changes density with temperature.

https://www.researchgate.net/publication/287491270_Blubber_density_depends_on_lipid_composition_and_temperature_in_three_deep-diving_odontocetes

4