Science Memes

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submitted 2 days ago by [email protected] to c/[email protected]

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[–] [email protected] 36 points 1 day ago (4 children)

It's not what microplasitcs are! Does anyone knows what micro is at this point?

[–] [email protected] 14 points 1 day ago* (last edited 1 day ago)

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".

[–] [email protected] 32 points 1 day ago (2 children)

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]

-Wikipedia

[–] [email protected] 30 points 1 day ago

To add to this, the definition of microplastic is less than 5mm. So yes, 1mm microbeads are microplastics.

https://en.wikipedia.org/wiki/Microplastics

[–] [email protected] 15 points 1 day ago (1 children)

Millibeads

[–] [email protected] 9 points 1 day ago

Centibeads🐛

[–] [email protected] 1 points 1 day ago

a micron in size?

[–] [email protected] 8 points 1 day ago

1x10^-6 m.