Used to?
Science Memes
Welcome to c/science_memes @ Mander.xyz!
A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.
Rules
- Don't throw mud. Behave like an intellectual and remember the human.
- Keep it rooted (on topic).
- No spam.
- Infographics welcome, get schooled.
This is a science community. We use the Dawkins definition of meme.
Research Committee
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Biology and Life Sciences
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Physical Sciences
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Humanities and Social Sciences
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Memes
Miscellaneous
dam us government trying to prevent colorful toothpaste
Chuckles, I am in danger
Wtf is this meme border?
bordering on insanity
Haha, my poorly googled current events assignment is highly relevant after all these years! Take that you dork try hards!
Just mineral or ground rocks work just as well. I hate my wife’s soft face scrub, i need that shit that feels like I’m scrubbing my face with sandpaper, to exfoliate well. They sell one that has ground up lava rock, i love that shit, and it makes me wonder why anyone ever thought plastic bits was a good idea
Well, rocks in toothpaste would be very bad because they'd be harder than your teeth.
Harder? No. Enamel is harder than steel. It is more brittle though so don't go chewing rocks.
But lava rock grinds are not part of the industrial waste stream repurposed for profit. This is innovation!
They probably had some extra plastic to offload lol.
“What do we do with all these old bottles sir?”
It's not what microplasitcs are! Does anyone knows what micro is at this point?
If these aren't microplastics, what are?
"Micro" just means "small" in this case and doesn't mean "microscopic" or have anything to do with "micrometer".
The definition of "microplastic" according to NOAA: "Microplastics are small plastic pieces less than five millimeters long".
Microbeads are manufactured solid plastic particles of less than one millimeter in their largest dimension.[1] They are most frequently made of polyethylene but can be of other petrochemical plastics such as polypropylene and polystyrene. They are used in exfoliating personal care products, toothpastes, and in biomedical and health-science research.[2]
To add to this, the definition of microplastic is less than 5mm. So yes, 1mm microbeads are microplastics.
Millibeads
Centibeads🐛
1x10^-6 m.