1439
Hummingbird feet
(mander.xyz)
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
this post was submitted on 26 Nov 2023
1439 points (98.8% liked)
Science Memes
11047 readers
3051 users here now
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
Other Mander Communities
Science and Research
Biology and Life Sciences
- !abiogenesis@mander.xyz
- !animal-behavior@mander.xyz
- !anthropology@mander.xyz
- !arachnology@mander.xyz
- !balconygardening@slrpnk.net
- !biodiversity@mander.xyz
- !biology@mander.xyz
- !biophysics@mander.xyz
- !botany@mander.xyz
- !ecology@mander.xyz
- !entomology@mander.xyz
- !fermentation@mander.xyz
- !herpetology@mander.xyz
- !houseplants@mander.xyz
- !medicine@mander.xyz
- !microscopy@mander.xyz
- !mycology@mander.xyz
- !nudibranchs@mander.xyz
- !nutrition@mander.xyz
- !palaeoecology@mander.xyz
- !palaeontology@mander.xyz
- !photosynthesis@mander.xyz
- !plantid@mander.xyz
- !plants@mander.xyz
- !reptiles and amphibians@mander.xyz
Physical Sciences
- !astronomy@mander.xyz
- !chemistry@mander.xyz
- !earthscience@mander.xyz
- !geography@mander.xyz
- !geospatial@mander.xyz
- !nuclear@mander.xyz
- !physics@mander.xyz
- !quantum-computing@mander.xyz
- !spectroscopy@mander.xyz
Humanities and Social Sciences
Practical and Applied Sciences
- !exercise-and sports-science@mander.xyz
- !gardening@mander.xyz
- !self sufficiency@mander.xyz
- !soilscience@slrpnk.net
- !terrariums@mander.xyz
- !timelapse@mander.xyz
Memes
Miscellaneous
founded 2 years ago
MODERATORS
When I was little, my mom dropped me and her friends kid off at a church for arts and crafts, I was 5. We we given toilet paper rolls, pipe cleaner, glue, and some other stuff to make butterflies. I studiously started making mine, I got the wings, the antenna and asked what I was supposed to use for the legs. A full grown ass women look me right in the eye and said "Butterflies don't have legs".
I had seen butterflies land on flowers and latch on with legs, I was so confused how an adult wouldn't know that.
I remember asking my teacher why you could see the moon during the day and my teacher told me you couldn't.
This too left me very confused, because I had seen the moon that very morning from the school yard.
Last year my daughter told me her grade 4 teacher had told the class "Well nobody really knows how magnets work" to which my science-obsessed daughter replied "You mean you don't really know how magnets work!"
I confirmed to her that yes, our understanding of magnetism is about as complete as it can get. Of all the mysteries the universe has to offer, magnetism is not one of them.
What that teacher probably wanted to say was that, while we can explain how magnetism works, no one can tell you why it happens.
Nature doesn't have a reason to do things. There's no 'why' in anything, other than 'the laws of physics make it do so'.
For completeness, we cannot say for sure if we even exist. The universe could very well just be an imagination and nothing really matters, including the laws of physics and our understanding of magnets.
In this year alone, I've had so many things happen that just scream we live in a simulation, it genuinely wouldn't even surprise me if it was true.
Either way, nature is our one true god.
I'm addicted to solipsism. I know I'm meaningless in the grand scheme of things. But I've been thinking that when I die and cease to observe the universe and be aware that it exists, then what's the point of it existing?
Therein lies the issue. We don't know shit about the fundamentals of magnetism, other than "it sort of just follows the rules of electricity".
Okay, but, with other forces, like electricity, we understand that elections are bumping down the line and the force/motion of that can be used to do work or something.
With magnetism, it's more like, a complete black box, we can see what happens when we do x, but we have no idea what makes it do that. Magnetism it's measurable, we know it exists, we don't know how it exists. We know it works, but we can't figure out why it works.
It's a bit like gravity. We have some good theories, but that's about it.
No! That's the point I'm trying to make! Gravity and its source truly are a mystery (aside from the basic fact that it causes mass to attract other mass, of course)
Magnetism is a well defined component of the electromagnetic force. We know what it is, where it comes from, and why it has the effect that it does. We've known most of this for a century! The study of electromagnetism came early to the field of physics because it's easy to work with and understand on human scales.
To be very short, moving electricity creates magnetism; moving magnetism creates electricity. A permanent magnet is magnetic because most of the electrons are spinning the same way, creating magnetism. That's it.
That is what you tell the grade 4 students.
Later you can teach them about magnetic domains, dipole moment, electric and magnetic fields and their relationship to radio waves etc... But these are all things we know, and I feel like it's important that kids know that humanity has in fact mastered magnetism.
Sure there is still a lot to learn, but at this point it's engineering, not science. Practical things like magnetic alloys or optimal field arrangements for motors.
Feynman on magnets and these kind of questions.