My anxiety is through the roof again, thank you pointless Internet fights...
hello vonnie

titsay

if i look back, i am lost
occasionally subtle
No title available

No title available
No title available

Kiana Khansmith
DEAR READER

Kaledo Art

shark vs the universe
"I'm Dorothy Gale from Kansas"
2025 on Tumblr: Trends That Defined the Year
Jules of Nature
Lint Roller? I Barely Know Her

JBB: An Artblog!
One Nice Bug Per Day

tannertan36

⁂
trying on a metaphor

seen from Portugal
seen from United States
seen from Türkiye
seen from T1

seen from Lithuania
seen from United States
seen from United States

seen from Australia
seen from United States

seen from United States
seen from Iraq

seen from Brazil
seen from Brazil
seen from Brazil
seen from Brazil
seen from United States
seen from United States
seen from United States

seen from United States
seen from United States
@ladylexicon
My anxiety is through the roof again, thank you pointless Internet fights...
chocobo
What the FUCK is THAT
BITCHHHH…these chickens been hitting up the GYMMM😤😤they tired of y'all butchering them for chicken nuggets
i just have this persistent feeling of “i’m not doing enough” combined with “i don’t have the energy to do anything” and it just really fucking sucks
I mean oh I'm sorry I don't put up with your shitty behaviour and I call you up on it :'))) Clearly I'm too sensitive and take everything way too seriously :''''''''''''''))))))))))))))))))
No, I really strongly believe that if you tell someone not to do something, and they do anything -other- than immediately offering to correct their behaviour in future, BURN THAT FUCKING BRIDGE BECAUSE THAT PERSON IS IMMATURE AND CLEARLY HAS NO RESPECT FOR YOU.
I remember first learning that you can cry from any emotion, that emotions are chemical levels in your brain and your body is constantly trying to maintain equilibrium. so if one emotion sky rockets, that chemical becomes flagged and signals the tear duct to open as an exit to release that emotion packaged neatly within a tear. Everything made sense after learning that. That sudden stability of your emotions after crying. How crying is often accompanied by the inability to feel any other emotion in that precise moment. And it is especially beautiful knowing that it is even possible to experience so much beauty or love or happiness that your body literally can’t hold on to all of it. So what I’ve learned is that crying signifies that you are feeling as much as humanely possible and that is living to the fullest extent. So keep feeling and cry often and as much as needed
SHIT WHAT
Also let yourself cry. It really is a biochemical release valve to dump out all the chemicals that make you feel stuff.
I honestly think one reason men in western culture have so many problems is that we don’t let them cry, and literally their brains get stuffed with all this crap that doesn’t have a release valve. Men, please cry. You’ll feel better. It’s ok. You are not lesser for taking care of your health.
This is why tears from different emotions look different under an electron microscope. They’re literally made up of different things.
Happy tears are structurally different than sad tears than angry tears than overwhelmed tears etc.
“I couldn’t find any pictures that are-” is a very lousy excuse to whitewash PoC. There are plenty of PoC models, stock images, and editorials out there. You just have to find it. Here are some of the blogs that are dedicated to PoC editorials/models that I follow. Feel free to add and suggestion more.
filipinomodel
desimalemodels
modelsofcolor
pinoysonthelimelight
highfashionpakistan
black-boys
bollywoodeditorial
pakistanifashionedits
celebritiesofcolor
koreanmodel
indonesianmodels
theasianmalemodel
hellyeahblackmodels
@fcdiversity is another good one. they have a directory full of poc of all different ethnicities, ages, and genders
Every tumblr user: despite the fact that no one views or cares about my blog, I'll continue to spend the majority of my life updating it.
hey i’ve thought of a new way to explain the difference between math research and science research are u ready math research: Why does pizza get hot in an oven? Well, let’s first prove ovens exist. Then we can try to prove ovens get hot. Wait, have we even proved that pizza exists? Have we proved that pizza can get hot? Have we proved that heat exists? Have we proved that I exist? That you exist? science research: Why does pizza get hot in an oven? *sticks hand into burning oven* ahhHHHHHHHHHH WHAT’S HAPPENING
Is this used in GPS units and Google Maps because I’m pretty sure I have unironically used it for that purpose.
more like this ♡
Hey resident neuroscientist @sixpenceee, wanna explain why the strawberries look red?
The perception of the strawberries appearing red is the result of two features of how our retinas work: spectral sensitivity and color-opponence. The coolest part is this perceptual illusion happens in your eyes, not your brain! (If you have color-blindness, I apologize, this illusion may not work, and this phenomenon may not be as exciting for you.)
We have three cones: long (blue), medium (green), and short (red), that change their membrane voltage based on the wavelengths that reaches them. This spectral sensitivity is arranged so that there are a few wavelengths that produce a peak response, but there’s a lot of overlap of in responses. That is, many wavelengths stimulate more than one cone. (Test it out! Draw a few vertical lines on the image below and see how many curves it can pass through.)
The colored areas above highlight the perceptive regions where your eyes and brain can to easily differentiate color. The gray areas below the curves are areas that have to be disambiguated somehow. Let’s call them “ambiguous zones”.
Notice how big the ambiguous zone is under the red and green curves. This means that there are LOTS of wavelengths that cause red and green cones to respond. So how do we tell the difference in colors if the response between red and green is the same? One way is to compare the amount of response across the three cone types. For example, if the color is a bluish green, (say 550 nm on the graph above), the green cone will respond more (that is, its membrane voltage is higher) more than the blue cone. Another way is to use local spatial information and compare the ambiguous color to the colors surrounding it.
The posted photo has lots of color values in the red-green ambiguous zone, and your brain is having a hard time telling them apart. In the case of overlapping values of color where response is similar across cones, our nervous systems need to do a little extra somethin somethin. Enter the Retinal Ganglion Cells.
Many photoreceptors, such as cones, send their signals to one or a few retinal ganglion cells nearby. Retinal ganglion cells do a lot of spatial processing in vision. If you think of your retina as an LED screen, photoreceptors (in this case, cones) would be the individual LEDs, and ganglion cells would break up the screen a grid-like fashion, so your brain can process what’s happening in one screen position relative to another. The subsections of screen are called receptive fields. (You can also think of RGC’s as that one person who always has the gossip on people physically near them. They always know what’s up, and they’ll always tell you what’s going on where they’re at.)
Retinal ganglion cells are super important in perceiving contrast and edges. They respond to opposite responses that happen in that little region of the retina. Retinal ganglion cells circular receptive fields made up in what’s called center-surround orientation. Usually, for a cell to send a signal, the center of the circular region MUST be light while the outside of the circular region MUST be dark, or vice versa. This works for color, too. For a ganglion cell on the left to fire (called a green-center ganglion), the retinal region must see mostly green, and NO red. For the cell on the right (called a red-center), the retinal region must see mostly red and NO green. (Remember, white light has all wavelengths, so it’s gonna set everything off.)
In that photo, we’re seeing various shades of color that fall in that ambiguous zone under red and green, and these green-center retinal ganglion cells get a lot of green, but there are a few red-center retinal ganglion cells that are stimulated too, since we’re in this ambiguous region between red and green perception. SO! When you look at these shades of green next to one another, your red-green opposing retinal ganglion cells will fire, telling your brain that the ambiguous color is red, and not, in fact green. If you take a slice of the image, you don’t perceive this effect as strongly because you can no longer stimulate all the cones in the circular receptive fields in entirety.
Last step: let’s test a hypothesis.
If this illusion happens because the color stimulates two cones almost equally, and relies on retinal ganglion cells to tell the difference locally, we should be able to do this with the blue/yellow color boundary as well. (Yellow is detected largely by the green cone.) We can do this by taking a picture of lemons…
and tinting it so that all the “yellow” color values end up in an ambiguous color zone… et voila! The illusion occurs again!
To see if the perceived yellow colors are in the ambiguous zone, I approximated the wavelengths by matching the color value (without shading) to wavelength using this converter. (Since I’m matching it by eye, I have low confidence in my estimation, so I made the representative rectangles wider than they actually should be.) Look at where the “yellow” values fall in relation to the responses of the cones. The “yellow” values are closer to green cone’s response curve. Our “test” is successful, the “yellow” colors actually do fall into the ambiguous zone! Huzzah!
If you’re handy with Illustrator, Photoshop, Affinity, and the ilk, try this out yourself! You should be able do it with any image that includes opposing colors (red/green, yellow/blue).
In short, there are many wavelengths to which many cones respond almost equally. Your retina has some tools that detect contrast in both brightness and color value. When a color value that falls between to opposing colors (blue/yellow, red/green), your brain relies on outputs from retinal ganglion cells to locally compare values in a spatial subregion on your retina, and tell them apart. This strategy works pretty well with natural scenes, but digital manipulation exposes where it fails. Cool!
People with color blindness basically see this way all the time. Depending on the type of color blindness, folks may have much bigger ambiguous zones. So their color differentiation relies more heavily on their retinal ganglion cells!
Here’s the technical literature (pdf) that clarified all of this for me.
BONUS: If you make the photo large, and stare at the center of it for about 30 s, the photo will appear less green, and the reds will become redder. This effect is adaptation–your brain stops paying attention to all the green cuz it’s old news. When you look away at a white screen or surface, you’ll see the inverse color values of the image for a few seconds. This image is the visual imprint the colors have left on your brain.
leftwing men are like:
men: I support women!!
women: stop making sexist jokes.
men: NO!!! It's funny to laugh at your oppression!!
women: Stop watching porn.
men: NO!! I feel entitled to consume women like sex objects.
women: Take our concerns seriously.
men: NO!! You need to be sweeter, nicer, quieter, actually just don't say anything that could make me feel uncomfortable.
women: You're not a very good ally at all. What exactly do you do for us??
men: HOW DARE YOU SAY I AM NOT A GOOD ALLY?? I RESPECT WOMEN!!
name one native american intellectual off the top of your head, name one native american actor or actress off the top of your head, name one native american senator, one native american news anchor, or an author or a tv personality or a singer or a poet or a comedian, name a single native american teacher you’ve had, can you? probably not
ok so now think of one native american cartoon character you know of or a sports team relating to native americans whether it’s their actual name or their team logo, or a town you live in or near with a “native” name bet a lot of these things came to you right away i bet you didn’t even have to think
needing native representation in media, education and government are not decoy issues, the commercialization and appropriation of native cultures are not decoy issues, the lack of native representation is institutional oppression at work
White people specifically need to reblog this, I don’t CARE if it makes you uncomfortable–that’s the point. Listen to Native voices about Native issues PLEASE
No offense but when will a nice boy with a pretty smile and good arms carry me away from this bullshit
In regards of the social mask many have to wear to fit in - sometimes you just have to blend in, but it’s okay, because you know your true colors underneath !