Posts tagged "Science"
Why do magnets fall more slowly through a copper tube?
Researcher advances retinal implant that could restore sight for the blind
People who went blind as a result of certain diseases or injuries may have renewed hope of seeing again thanks to a retinal implant developed with the help of FIU’s W. Kinzy Jones, a professor and researcher in the College of Engineering and Computing.
A tiny video camera mounted on special glasses captures the scene in the patient’s environment, and a pocket controller relays the captured video signal to the implant. Inspired by cochlear implants that can restore hearing to some deaf people, the retinal implant works by electrically stimulating nerve cells that normally carry visual input from the retina to the brain, and bypassing the lost retinal cells.
The Boston Retinal Implant Project, a highly-specialized, academically-based team of 30 researchers including Jones, was responsible for bringing the implant to light. The group is comprised of biologists and engineers from Harvard, Cornell, Massachusetts Institute of Technology (MIT) and others who are developing new technologies for the blind.
"Jones’ work was one the most important technological developments needed to make the device possible," said Douglas Shire, engineering manager for the Boston Retinal Implant Project. "As a result, users of the retinal implant will be able to adjust the implant according to their needs."
Jones has been working for years to advance the airtight sealed titanium housing and feed-through component that transfers the signals from the implanted microchip to the electrodes. His improvements in the density of that feed-through will greatly improve the quality of the image the person wearing the device will see.
The retinal implant was designed for people who lost vision due to injury to the eyes; progressive vision loss caused by eye disorders (also known as retinitis pigmentosa); or age-related macular degeneration, when the center of the retina that is responsible for central vision deteriorates. According to the National Institutes of Health, age-related macular degeneration is a leading cause of vision loss in Americans 60 years old and older.
"The impact of this technology, which increases the available pixels that can be stimulated, will bring enhanced visual acuity to people with debilitating eye loss," Jones said. "My mother had macular degeneration and I saw the quality of her life degrade as the disease progressed. Hopefully, when these devices are available for FDA approved use, total loss of eye sight from macular degeneration or retinitis pigmentosa will be a thing of the past within 10 to 15 years."
Recently, a similar device that features 60 electrodes was approved for use in patients and has proven successful in allowing people who were blind to read words on a screen.
Shire explained that the device that the Boston Group is building with Jones’ help has more than 256 electrodes and therefore allows for images with a larger number of pixels, which is expected to give patients a meaningful visual experience.
(via biognosis)Source medicalxpress.com
[trigger warning: misogynoir] D.N. Lee (@DNLee5), a Black scientist (her blog is called The Urban Scientist on Scientific American Mind) was treated in the most disrespectful way by a science publication, Biology-Online.org. They wanted her to blog for them. She inquired about what they wanted, the frequency and the pay. The editor advised her of the details and that there is no pay. She politely declined.
Then their editor replied with “are you urban scientist or an urban whore?”
A Black woman works hard to become a scientist only to be called a “whore” because she expects to be paid for her work. PAID FOR WORK, you know that neat thing that people all over America expects and one that America has a history of not always doing where Black women and Black people in general are concerned? Black women are regularly insulted when we fight back against labor exploitation or even simply say no, like she did. We cannot say no? I’ve been called every name in the book for this.
So not only is the well-engrained hatred of sex workers involved in this insult (because they’re paid for sex, which is outlandish to patriarchy since men feel they are owed sex), not only is there the misogyny that women in STEM face endlessly, but the way this person used her blog title in the insult to be “clever” also implies specific anti-Black misogyny or misogynoir.
Did you ask why some Black women/women of colour and White women avoid STEM like a plague? Did you think it was the sexist myth that all women “can’t” do science and are “afraid” of math? Very few people recognize the gravity of the sexism and racism in STEM and how that (in addition to capitalism) actually shapes what degrees are deemed “useless" or not and even creates a hierarchy among the degrees deemed “useless.” Very few want to examine how the cycle below contributes to why some women opt out of STEM and why some women face so much abuse in STEM:
Gender socialization → Sexism → Misogyny → Stereotype threat → Confirmation bias
The fact that this person would actually type the word “WHORE” in a professional email to someone they sought work from turns my stomach and makes me stabby as hell.
I love her confident and nuanced reply in the video above. I LIVE! She deserves to be treated with respect and this publication with its misogynoir needs to re-evaluate themselves and the editor needs to be held accountable.
(I am not clear if she lost her blog position but her post about her experience was taken down from Scientific American Mind but elaborated on in a post on Isis The Scientist. Read more here: An Open Letter To Scientific American Mind And Why You’ve Lost A Reader #BoycottSciAm from someone who followed her situation.)
Misrepresentation of women of color, specifically black women in STEM fields and communities, leads to this sort of disgusting behavior within scientific communities. But let’s keep ignoring the problem of racist, sexists attitudes in these communities so we can march onward with “rationale and logic” right? This is such bullshit. No one should have to go through this for doing what they love and expecting respect.
This is why it matters.
I read a few comments below the “Open Letter,” and people keep focusing on the “whore” part of the insult.
People, this scientist was asked if she was “an urban whore.” “Urban.” Let us not overlook the blatant racism there on top of the sexism. White liberals and white feminists tend to seriously look over the racism attached to the misogyny that women of color face so that the problem can fit more in line with their own goddamn mission. Cut that the fuck out, people.
(via fuckyeahfeminists)Source gradientlair
when life hands you lemons question your sense of empirical observation because the metaphysical concept of life just delivered you fresh produce
(via biognosis)Source shavingryansprivates
➤ New Element: http://is.gd/JlIHpI
➤ Mini Human Brains: http://is.gd/Qzm6AM
➤ 3D Printed Rocket: http://is.gd/WQuId6
➤ Origin of Life: http://is.gd/majHqq
➤ Sperm Bank: http://is.gd/FpWQVx
➤ Diabetes & Fruits: http://is.gd/9QGV7Y
➤ August 26, 1850 French physiologist, Charles Richet
➤ August 27, 1874 German chemist, Karl Bosch
➤ August 28, 1878 American astrophysicist, George Hoyt Whipple
➤ August 29, 1876 American inventor, Charles Kettering
➤ August 30, 1871 New Zealand-born physicist, Ernest Rutherford
➤ August 31, 1821 German physicist, Hermann von Helmholtz
Brand new episode of our Youtube show is available now: http://bit.ly/19VPnCM
Brain to brain interface: http://bit.ly/19YXM8g
Miniature brains: http://bit.ly/17t24EF
Life on Mars: http://bit.ly/1e55Req
New element: http://bit.ly/17xqSK1
Oldest Sun-like star: http://bit.ly/1fsOemB
Fastest spinning object: http://bit.ly/1aciPb3
Big bang simulation: http://bit.ly/18gkNkZ
Long lived bacteria: http://bbc.in/15NkOhQ
(via piercinglygood)Source atomstargazer
"Life is Older than Earth Itself" — Moore’s Law
As life has evolved, its complexity has increased exponentially, just like Moore’s law which states that the number of transistors on an integrated circuit doubles approximately every two years. Geneticists, Alexei Sharov at the National Institute on Ageing in Baltimore and Richard Gordon at the Gulf Specimen Marine Laboratory in Florida, have extrapolated this trend backwards and found that by the measure of Moore’s Law, life is older than the Earth itself.
The team takes Moore’s Law back to zero complexity and the origin of life, by measuring the complexity of life and the rate at which it has increased from prokaryotes to eukaryotes to more complex creatures such as worms, fish, amphibians and eventually mammals. The result is an exponential increase identical to that behind Moore’s Law with the doubling time, however, expanding to 376 million years rather than every two years.Source dailygalaxy.com
a lovely ✿ jellyfish in a bottle tutorial by bhoomplay ✿ that is a truly stellar alternative/addition to the ✿ glitter jar ✿ that i’ve seen floating around tumblr. i’m sure you can combine both recipes to make your jellyfish float around a sleepy celestial dream as well ~ these are great for anti-anxiety; simply shake em around if you’re feeling anxious/manic/etc and just observe the sparklyness until the glitter begins to settle, sort of like a timer or something to simply distract you :)
(via mekquake)Source bhoomplay.wordpress.com
ALWAYS reblog… I always think the green slime stuff coming out of the mouths of the people as religious doctrine and fundamentalist tradition.
(via apollo-black)Source thetumblratheist