Comment on Anon sees ghosts
Eiri@lemmy.world 3 weeks ago
Those are so cool. They’re the only way (I know of) that you can see molecules with your naked eye. Actual molecules! That’s practically at the level of atoms, and you can see that microscopic stuff!
Also red blood cells. It’s pretty cool that if you stare at the sky (not the sun; please not the sun) you can sometimes see red blood cells move in the back of your eye. Single cells! Amazing.
They are individual cellular organisms but they’re not molecules. Individual molecular structures are too small for light to interact with so no matter how much you magnify them you’re never going to see them.
That’s why things like electron microscopes were invented. You can’t just build bigger and more powerful microscopes it doesn’t work.
I thought they were cells
Looks like you’re closer to the truth than I am.
filcuk@lemmy.zip 3 weeks ago
Err, I don’t think that’s right. That’s physically impossible. Only electrons are small enough to visualise molecules and atoms, which is why you need electron microscope to see those.
Eiri@lemmy.world 3 weeks ago
Whoa, my optometrist tips me that’s what they are and now I’m really disappointed.
Considering their shape and what you said about them being impossible to observe in visible light… I guess those branch-like pieces are cell organelle fragments instead?
Dang, and here I was excited to be seeing molecules.
Flax_vert@feddit.uk 3 weeks ago
You can see cells with the naked eye as well. Notably, eggs. Chicken eggs are also one cell. The largest cell is an ostrich egg.
frezik@midwest.social 3 weeks ago
There are amoebas that reach 5mm in length.
IIRC, there are limits on how big they can get based on how far RNA can travel after copying DNA.
Gemini24601@lemmy.world 3 weeks ago
Don’t forget about Valonia ventricosa as well!