[-] wren@feddit.uk 1 points 2 months ago

the wet bulb temperature^1^ is just the temperature of a wet thermometer, and varies with humidity and temperature. Wet bulb temp is never higher than the dry bulb temp, so (entertainingly) you're proposing that the meaning of 100° varies wildly and is always lower than the true temperature, effectively making the air temperature always ≥100°, and increases when the air is drier, like some sort of inverse relative humidity.

^1^(I'm aware you probably didn't mean wet bulb temperature here, but let's have fun with the idea) :)

[-] wren@feddit.uk 1 points 3 months ago

Using ",,," as ellipses here is a pretty interesting tone indication feature!

On Tumblr, "..." ended up having connotations of judgement or anger, so to avoid that, people evolved to use ",,," as a softer version (often implying a more silly/amused tone) instead !

[-] wren@feddit.uk 1 points 3 months ago

Yeah, there's definitely a difference between curricula, what's focussed on in classrooms, and exam assessment criteria, but they're supposed to be cohesive.

I remember one of my big pieces of coursework was "writing from the perspective of an advertiser," and we had loads of lessons on identifying bias. I was taught in school that "red top magazines" are "less honest and more emotive" than "broadsheet newspapers."

Presumably not everyone had the same experience though: I mentioned this offhand and my friend told me "surely that's illegal to teach in a classroom?!"

[-] wren@feddit.uk 1 points 6 months ago

good question!! I actually might have been mistaken by saying sea salt was an INP (whoops).

Sea salt is a great condensation nuclei (CCN). CCN allow cloud droplets to form instead of ice crystals.

For cloud seeding to work well, it's better to seed with INP instead of CCN because if you encourage lots of droplets to form, all you get is a bunch of really tiny droplets, making a really bright white cloud (no rain!). (Side note: that's why rain clouds look dark: they're made of fewer really big droplets.)

Adding sea salt to clouds is a thing though! It's been proposed as Marine Cloud Brightening - adding lots of sea salt to the air over the ocean, making the earth more reflective to combat further global warming.

As far as I know, most inorganic salts are good INP or CCN, but have varying efficiencies. Sea salt dissolves in liquid water whereas silver iodide doesn't, and silver iodide has the right sort of hexagonal crystal lattice for ice to start sticking to. So silver iodide is a great INP whereas sea salt is a great CCN.

Even longer (and reasonably silly) explanation here: https://www.acsh.org/news/2022/09/01/why-are-clouds-seeded-silver-does-it-work-16538

[-] wren@feddit.uk 1 points 7 months ago

If you mean climate change, then yeah, obviously humans do influence the climate. In terms of individual scale events (weather, big storms) there's not any existing technology that exists that can cause a single targeted big storm event.

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wren

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