banner
planes-and-horses.bsky.social
@planes-and-horses.bsky.social
Engineer/Loves Science, planes, nature.
~0.11 slugs
November 12, 2025 at 11:55 PM
Assuming you really believe that, you just voted for what you ‘think’ will reduce short term pain for your constituents over their long term health. Shortsightedness and stupidity are not good leadership qualities.
November 10, 2025 at 5:42 PM
How do you stop billionaires from having A.I. build them a social media algorithm that influences the masses into doing whatever serves their greed. Preying on people’s fears and weaknesses. It seems that’s unfortunately more near term than replacing all the workers with robots.
October 6, 2025 at 3:31 PM
As someone who grew up with Kroger but has lived in Publix-land for almost 40 years, I honestly believe that Kroger is hands down superior. No contest. Kentucky should see Publix as the Spotted Lanternfly of supermarkets.
September 11, 2025 at 10:01 PM
Not ludicrous. Just math. Arguing this is just a diversion from the basic observation that you didn’t take the time to check the atoms in the universe thing, evidently just pulling it from your backside. That implies that you put the same sloppy thought into the rest of your post.
September 4, 2025 at 3:17 PM
Which is 92.7 kg.
September 4, 2025 at 3:11 PM
10^27 atoms is 1660 moles of atoms. A mole is defined as 6.022x10^23 number of things. Atoms, molecules, whatever actually. It’s just a unit. Atomic mass is just the mass of one mole (6.022x10^23 atoms). The atomic mass of iron is 55.85 grams per mole. The mass of 1660 moles is 1660*55.85
September 4, 2025 at 3:10 PM
Sorry, math error 1600 moles of iron (10 to the 27 atoms) weighs 89kg. Aron atomic mass is 55.845 grams per mole where chemistry class a mole is 6.022x10^23 atoms.
September 4, 2025 at 2:58 PM
1e27 is one way of writing 1x10^27 or 10 to the 27th power. You said it’s the number of atoms in the known universe. It’s the only actual ‘fact’ you asserted and it is totally wrong, I mean wrong on an immense scale. Sorry, I was just dumbfounded that something so ludicrous came across my feed.
September 3, 2025 at 11:01 PM
1e27atoms / 6.022e23atoms/mole =~1600 moles. Hydrogen atomic mass is ~ 1 gram/mole so you are saying the mass of the universe is equivalent to about 1.6 kg of hydrogen. Or about 28 grams (one ounce) of iron.
September 3, 2025 at 12:45 PM
If your bottle is in the unpressurized cargo area, you will have a much larger pressure difference, around 10psi. So your bubble will need room to triple its original size. On the bright side, it’s usually cold in there which will shrink the bubble. ie., the problem is no longer isothermal.
December 17, 2024 at 1:06 AM
A neat thing about flying out of a high airport like say Denver, the starting pressure in your bottle is lower so you’re less likely to squish anything out.

That’s why transferring in Denver tends to be easier on your ears. The altitude on the ground in Denver is fairly close to the plane’s cabin
December 17, 2024 at 12:33 AM
The bubble will have enough space to expand until its pressure just equals the cabin pressure and your bottle won’t leak.
December 17, 2024 at 12:28 AM
The change in bubble volume to equalize pressure will be about 15/11 or about 136%. Sooo, you will push out an amount of lotion equal to about 35% of the size of the bubble in your un-squished bottle.

If you squish out enough air before flight to reduce the bubble volume by about 30%, 2/3
December 17, 2024 at 12:27 AM
At sea level, there is about 15 psi in your bottle un-squished bottle. If your cabin is pressurized to say 8000ft, the cabin pressure is around 11 psi so you have about 4 psi delta pressure trying to leave, pushing your lotion out until the pressure in the bubble equals cabin pressure. 1/2
December 17, 2024 at 12:25 AM
1) I’d ride to work every day if I could do it without getting run over.

2) Is there a chart with a buzzard on there? They seem stupendously efficient.
November 25, 2024 at 9:10 PM
A Nature article had links to a science starter pack.
‘A place of joy’: why scientists are joining the rush to Bluesky
Researchers say the social-media platform — an alternative to X — offers more control over the content they see and the people they engage with.
www.nature.com
November 22, 2024 at 11:25 PM