this seven year old girl got half an arm (just like lusie in the gifs) 3d printed and it only cost $50
can we just compare that with the average price of buying a prosthetic
3d printing is gonna help so many people holy crap
No no no, guys, this gif set leaves out the literal best stuff from the video.
So a few years back, this guy who accidentally cut off his fingers, teamed up with a special effects artist/puppeteer and created a 3D printable prosthetic hand, that used the movement of the wearer to be able to grab things. The guys who did this said they were just going to post the schematics online, which in turn lead to creating a network of people with 3D printers, who were willing to print prosthetics for people. The network of volunteers, turned into an organization that gives prosthetic arms/hands to kids who need them. They have science types improving the designs and creating new ones, they got a grant from Google, classrooms and scout troops are getting involved and making prosthetic hands for people.
Everything about this is amazing.
It’s stuff like this that makes technology awesome :’)
A special eye protein is helping birds to “see” Earth’s magnetic field! If that’s not cool, I don’t know what is.
The ability to see Earth’s magnetic field, known as magnetoreception, relies on the presence of specifically the blue wavelength of light. The complex process involves “radical” intermediate molecules which are sensitive to Earth’s magnetic field. The Earth’s magnetic field, as it relates to the direction the bird is facing, could alter the intermediate radical molecules differently, giving the bird a sense for where it is facing in relation to the Earth’s magnetic field.
While the exact way birds visualize Earth’s magnetic field is part of further investigation, scientists believe the Cry4 protein acts as sort of a filter over the bird’s vision. This filter would allow birds to see a sort of compass of the Earth and direct their migratory flights accordingly.
Not to critique evolution, but I would think orange and black stripes wouldn’t be as good for camouflage in a forest as, say, green and black would.
It turns out a lot of animals can’t see the difference between orange and green! Elephants, for instance, have dichromatic vision (two types of cones, rather than three like most humans.)
Check out this diagram from ResearchGate. It deals with the color vision of horses, who are also generally dichromatic. (I think, though I’m not sure, that zebras would have the same color vision as horses.) See how orange and green look to them?
Not to critique evolution but I think prey animals should be better at telling when their predator is dressed like a traffic cone.
It doesn’t matter what zebras see, because tigers are not native to Africa and do not naturally hunt zebra. Tigers are Asian and mostly hunt animals like deer, elk, and buffalo. These aren’t animals with great color vision. They don’t need to have it because they don’t eat fruit and so don’t need to know when the berry is ripe vs when it’s not. Good color vision is too expensive to have if you don’t need it. Deer put their vision stats in a wide field of vision that is sensitive to motion, low light capabilities, and possibly seeing UV light. They don’t have great color and lack a lot of acuity, but have a great sense of smell and good hearing. That’s way more useful if you’re prey. Deer see well in the blue end of the color spectrum and less well in the red. This makes sense because deer are most active in the dawn and dusk periods, when there is more blue in the light. Tigers are taking advantage of deer eyesight by being orange.
We see tigers are being obviously colored because tigers are fruit colored to our tree ape brains.
I don’t know what the best part of this is: implying that deer chose their attributes on a character sheet, or the fact that we get to see tiger colors because they look like a snack.
“we get to see tiger colors because they look like a snack.” I feel like this explains a lot about human decision making
one of my favorite things is how badgers and coyotes will hunt cooperatively. as in not just like happening to go after the same thing at the same time but actually combining efforts to bring down prey; coyotes are faster and can chase down prey species, while badgers are adept at digging them out of their burrows
Cheloneuniverse 