- 3 minutes ago
This animation is about one of the most significant problems in the history of mathematics: The Brachistochrone Challenge:
If a ball is to roll down a ramp which connects two points, what must be the shape of the ramp’s curve be, such that the descent time is a minimum?
Intuition says that it should be a straight line. That would minimize the distance, but the minimum time happens when the ramp curve is the one shown: a cycloid.
Johann Bernoulli posed the problem to the mathematicians of Europe in 1696, and ultimately, several found the solution. However, a new branch of mathematics,Calculus of Variations, had to be invented to deal with such problems. Today, calculus of variations is vital in Quantum Mechanics and other fields.
(via electricbellhops)Source: saulofortz
- 7 minutes ago
On the morning of September 4, 1957, fifteen-year-old Dorothy Counts set out on a harrowing path toward Harding High, where-as the first African American to attend the all-white school – she was greeted by a jeering swarm of boys who spat, threw trash, and yelled epithets at her as she entered the building.
Charlotte Observer photographer Don Sturkey captured the ugly incident on film, and in the days that followed, the searing image appeared not just in the local paper but in newspapers around the world.
People everywhere were transfixed by the girl in the photograph who stood tall, her five-foot-ten-inch frame towering nobly above the mob that trailed her. There, in black and white, was evidence of the brutality of racism, a sinister force that had led children to torment another child while adults stood by. While the images display a lot of evils: prejudice, ignorance, racism, sexism, inequality, it also captures true strength, determination, courage and inspiration.
Here she is, age 70, still absolutely elegant and poised.
she deserves to be re-blogged.
she’s so goddamned inspirational
this makes me want to cry
I have probably reblogged this photoset 5 times, and I will keep reblogging it because I have been getting into insane conversations lately with misguided folks who think “colorblindness” is possible and preferable than having difficult conversations about race and privilege. This happened 59 years ago, not 500. This could be your grandparents, or great uncles and aunties in these photos. Get with it.
(via theenigmaticnegro)Source: cloudyskiesandcatharsis
- 14 minutes ago
Do you remember those boys that go to the ‘hood’ and mess with people all for the sake of a “prank”? Well, they went to a radio station for an interview and the hosts there called them out on their racist shit and it was the most beautiful thing I’ve ever seen. Check this video out.
(via black-culture)Source: reverseracism
- 35 minutes ago
- 36 minutes ago
Test Shots is an ongoing series of portraits taken in the studio with photography couple Rog and Bee Walker. Each photograph, taken mostly of their close friends and fellow creatives, is as striking as it is simple.
Opting for a sombre and dark background, coupled with poised and pensive subjects, Walker’s shots manage to maximize on the simplicity of the traditional portrait style by making use of a medium format camera that provides an image quality which, despite the powerful stillness of each individual, vividly brings the details of each photograph to life. This brings out both a sense of strength and vulnerability in each picture, alluding to the intimate two-way dialog between subject and photographer.
"This is the most organic method of communication I have. Photography is the way I speak…It doesn’t get more personal than another human, and that’s what I’m looking to capture, that connection between humanity." - Rog Walker
(via black-culture)Source: dynamicafrica
- 37 minutes ago
Nicholas Lord, a Navy sailor since 2008 currently on active duty, is under investigation after threatening to rape a young woman who is a Navy recruit.
The young woman posted a photo of herself on Facebook, captioning it to say she’s proud of how she’s working hard to get in shape for the Navy, and she’s excited to be leaving soon. The photo was shared on the page for her Delayed Entry Program for her fellow Navy recruits.
Nicholas Lord, who is not a current recruit and who has been serving in the Navy since 2008, then commented:
You’ll end up pregnant real soon you fucking wh***. If I could and I knew you, I’d hold you down and rape you.
The next day, Lord gloated about his threat on his Facebook page, updating his status to say he’d been “trolling feminist pages.” In case it needs to be said, the Facebook page for a Navy program is not a “feminist page.” It’s a Navy recruiting page. (x) (x)
I don’t know what the Navy’s punishment system is like, but I hope he gets the worst possible. I hope they investigate his past history in the military, too. If he’s bold enough to outright threaten female recruits, under his own name, on public, Navy-run social media, I seriously doubt he hasn’t harassed and threatened female sailors. He may even have raped them.
Especially given the military’s problem with letting men get away with harassment and rape, they need to severely punish him.
Send it viral, and he will see ramifications.
If you only reblog one thing today I hope it’s this.
Reblogging for signal boost, and to add TW
Not even sorry…
Sounds like he thinks he’s somehow the victim here.Fucking disgusting. I hope he gets fired and at LEAST punched in the damn face.
(via theenigmaticnegro)Source: facebooksexism
- 40 minutes ago
- 41 minutes ago
The Turkish company Pugedon has created a vending machine that’s dispensing help for both the environment and our furry friends.
this makes me so happy
I could cry
(via theenigmaticnegro)Source: huffingtonpost