By showing that varying degrees of friction between the fingers alters the elastic performance of a snap, these scientists have opened the door to discovering the principles operating in other organisms, and to putting this mechanism to work in engineered systems such as bioinspired robots.”
John Long, a program director in NSF's Division of Integrative Organismal Systems, said that the research “is a great example of what we can learn with clever experiments and insightful computational modeling. "It's really an extraordinary physics puzzle right at our fingertips that hasn't been investigated closely." "For the past few years, I've been fascinated by how we can snap our fingers," Bhamla said. Bhamla said the project is also a prime example of what he calls curiosity-driven science, where everyday occurrences and biological behaviors can serve as data sources for new discoveries. Their results might one day inform the design of prosthetics meant to imitate the wide-ranging capabilities of the human hand. The research was led by Georgia Tech researchers Raghav Acharya, Elio Challita, Saad Bhamla and researcher Mark Ilton at Harvey Mudd College. The results were published in the Journal of the Royal Society Interface.
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Using an intermediate amount of friction, not too high and not too low, a snap of the finger produces the highest rotational acceleration observed in humans, even faster than the arm of a professional baseball pitcher. National Science Foundation-funded researchers at Georgia Tech to study the physics of a finger snap and determine how friction plays a critical role. Today, that same snap initiates evil forces for the villain Thanos in Marvel's latest "Avengers" movie. L.The snapping of a finger was first depicted in ancient Greek art around 300 B.C. "I scuba dive, and being able to use sign language while diving would expand the experience greatly. Your site has captured his interest and he is intrigued." He's exceptionally bright, very active, inquisitive and challenging. "We use the site in our homeschooling, as a second language, for our 9-year-old child who does really well with homeschooling. Much less crying, much more laughing! Thank you for this site, the best of its kind on the web." "Our daughter is so much happier that she can tell us what she wants and needs. a certified ASL instructor and Deaf native signer." "Your website is a blessing! I often refer my ASL students to the tutorials on this site as an extracurricular resource when they needed help. I just wanted to express that I am so grateful for you and for - you are wonderful, thank you for creating this project!! - Kat" "Your website has helped me to learn ASL and about Deaf culture, both when I studied in University and now as I continue to practice and learn. My TA's recommended it over other online ASL dictionaries. "Handspeak is such a great online ASL lexicon, and it is very helpful. Very blessed for this incredible project of yours. I am just learning ASL, and I keep this tab open on my computer and check in several times a day to form words and sentences. THANK YOU!!!! You have blessed me for sure! - Nita" A problem that was haunting me was found in short order using the sign and contextual reference from the assignment. It was really beginning to wear down on me and I was getting nervous about how the rest of the semester will go. "I have been struggling to figure out signs for my class. I came to the conclusion that your dictionary of signs were one of the best and I relied on it immensely.
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