Top Vídeos
In her new book, Bones Books and Bell Jars, physician and photographer Andrea Baldeck documents the collection of medical texts, instruments, and specimens at Philadelphia's Mütter Museum.
Bacteria and viruses hitch a ride inside droplets of all kinds—sneezes, raindrops, toilet splatter. By reviewing footage of different types of drops, applied mathematician Lydia Bourouiba records and measures where they disperse in order to better understand how diseases spread. Watch how Bourouiba designs tests—some inescapably humorous and awkward—to study infectious disease transmission.
Publications References:
Bourouiba, L. (2016) A Sneeze. New England Journal of Medicine. 357(8):e15.
Wang, Y. and Bourouiba, L. (2016) Drop impact on small surfaces: thickness and velocity profiles of the expanding sheet in the air. Journal of Fluid Mechanics. 814:510-534.
Gilet, T. and Bourouiba, L. (2015) Fluid fragmentation shapes rain-induced foliar disease transmission. Journal of the Royal Society Interface. 12:20141092.
Gilet, T. and Bourouiba, L. (2014) Rain-induced ejection of pathogens from leaves: revisiting the mechanism of splash-on-film using high-speed visualization. Integrative and Comparative Biology. 54:974–984.
Bourouiba, L., Dehandschoewercker, E., and Bush, J. W. M. (2014) Violent respiratory events: on coughing and sneezing. Journal of Fluid Mechanics. 745: 537-563.
Scharfman, B. E., Techet, A. H., Bush, J. W. M. and Bourouiba, L. (2016) Visualization of sneeze ejecta: steps of fluid fragmentation leading to respiratory droplets. Experiments in Fluids. 57:24--1-9
A film by Science Friday
Produced in collaboration with the Howard Hughes Medical Institute
Produced and Directed by Emily V. Driscoll and Luke Groskin
Filmed by Luke Groskin
Editing and Animations by Jason Drakeford
Music by Audio Network
Additional Photos and Video by
Lydia Bourouiba, Yongji Wang, Tristan Gilet, Sophie Lejeune, Claire Lu, and Eline Dehandschoewercker
Alamy, Pond5, Shutterstock
Project Advisors:
Laura A. Helft, Laura Bonetta, Dennis W.C. Liu and Sean B. Carroll - Howard Hughes Medical Institute
Special Thanks to:
Lydia Bourouiba, Christian Skotte, Danielle Dana, Ariel Zych, Jennfier Fenwick, Timothee Jamin, Stephane Poulain, and Maxime Inizan
To learn more about her research you can visit https://lbourouiba.mit.edu/
Ice can be hard to get a handle on, literally and figuratively. It can be cloudy or clear, as hard as concrete or as soft as a snowflake. Ice experts Erland Schulson, head of the Ice Research Lab at Dartmouth College, and Shintaro Okamoto, founder of Okamoto Studio in Queens, New York, have staked their livelihoods on the slippery material. We asked them what fascinates them about frozen water. (Originally published Jan 27, 2012)
Science Friday salutes a great science teacher. "Office hours are some of my favorite hours of the week," says professor Tom Carlson, a medical doctor, ethnobotanist and instructor of 1700 students annually at the University of California, Berkeley. One of Carlson's former students, SciFri associate senior producer Christopher Intagliata, told us that Carlson's class was the reason he got into science. Listen here: http://www.sciencefriday.com/s....egment/05/31/2013/te
Photographer Colin Legg makes time-lapse movies of celestial scenes, from auroras to eclipses. Photographing mostly in remote parts of Australia, where human-made light doesn't compete with starlight, Legg describes some of the challenges of this type of photography -- from babysitting cameras for days and nights on end to running electronics in the backcountry.
For honey bees, making is a new queens is a simple as adding royal jelly, a unique protein rich secretion, to the cell of a growing larvae. This fairly well studied addition causes a cascade of physiological changes in the growing larvae and voila! A queen is born. However, what causes a baby bumblebee (the fuzzier and more weather-hardy cousins to honey bees) to become royalty remains a mystery. They don’t produce royal jelly but they produce a unique barf for their young. Enter entomologist Hollis Woodard and her students at UC Riverside who hope that by understanding how queens are created, they can mitigate on-going extinction crises in bumblebees species. Woodard and company begin by heading up to San Bernardino mountains outside Los Angeles. Here, the researchers collect emerging queens as they buzz around the blooming Manzanita shrubs. These queens are brought back to the lab, where the establish their own (see through) honeypots. Lavished with food by the lab members, the queens lay dozens of larvae which become daughter drones. These drones are then “milked” for their barf which is analyzed for its chemical properties. Future larvae are hand fed the analyzed barf in various quantities and intervals to determine what factors lead to the generation of queen bees.
Produced by Luke Groskin
Filmed by Christian Baker
Audio Recording by Christopher Intagliata
Music by Audio Network
Additional Footage Provided by Woodard Lab, Creative Commons Media (C.C. BY 2.0),
Cees Van Hengstum (C.C. BY 2.0), Alex Murphy (C.C. BY 2.0),
Blue Line Apiary (C.C. BY 2.0), Pond5
From 2011: Using the Swedish Solar Telescope, a ground-based observatory, Goran Scharmer and colleagues probe the penumbra--that's the stringy structure around the perimeter of the dark part of the sunspot. The images give scientists new insight into how that structure forms.
Researchers are on a quest to find the lake trout that remain in Lake Michigan.
Watch budding engineers compete for best bot at the FIRST robotics New York regional. Plus, a special appearance by Dean Kamen
On this video I'll show you some funny stuffs can made from origami, really fun ^^, don't forget to like, share and comment !
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Music :
Italian Morning by Twin Musicom is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Artist: http://www.twinmusicom.org/ If at any point in my tutorials you feel I'm going too fast, try using YouTube's slow motion feature. To do this, press the little gear icon at the bottom right of the video screen, click on 'normal' and then click on the speed .50 or .25 .
El cangrejo Sebastián le da vida a la canción más memorable de la película.
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Una nueva tripulante llega al Junior Express. Harmony deberá probar que es capaz de reemplazar a su hermana Melody antes de ser aceptada por sus compañeros.
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Pumba le enseña a Timón a ser una mejor persona cada día, mientras ambos le hacen honor a la frase que aprendiste en El Rey León: Hakuna Matata :)
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Nina está muy apurada, ya no puede aguantar. ¿Quién la podrá ayudar?
Una serie para acompañar a los chicos en su crecimiento.
¡Nina tiene que ir! En Disney Junior.
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Un vistazo superelegante a la nueva serie Disney Junior. Prepárate para conocer a Nancy, su familia y todos sus amigos.
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Descubre Mulán, la historia una valiente y audaz joven que quiere ser fiel a sí misma y honrar a su familia. Cuando su padre es llamado a luchar en la guerra, no duda en tomar su lugar y decide salvar el honor de él para terminar salvando a toda una nación.
#SoyPrincesaSiendoYo
#DescubriendoMulan
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Mini aventuras de Winnie the Pooh - El ponto
¿Listo para escuchar una historia ? Viaja al bosque de los Cien Acres, para vivir otra divertida aventura junto a Winnie the Pooh y sus amigos! Las Mini aventuras de Winnie the Pooh, en Disney Junior!
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Los miembros de la tripulación se divierten sobre la pasarela... ¡y el público los ovaciona!
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