Top Vídeos
The Rockaways, a Queens, N.Y. neighborhood, is still recovering from Sandy. Debris from fires lingers on the streets, and buildings torn apart by the storm are crumbling on the beach. But at least for those with restored heat and power (7,000 customers in the area are still without power), there is yet another worry: mold. Peter Corless, a community organizer in the Rockaways, gives us a tour of the neighborhood, while Joan Bennett, a mycologist whose house molded after Katrina flooding, describes the species of fungi she found in her own home after that hurricane and in New Jersey homes post-Sandy.
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For more about this work head to Dr. Lydia Bourouiba's Webstie : http://lbourouiba.mit.edu
Although we all know that sneezes and coughs transmit infections, little research had been done to model how they work. To address this knowledge gap, Dr. Lydia Bourouiba and Dr. John Bush of MIT's Applied Mathematics Lab used high speed cameras and fluid mechanics to reveal why we've grossly underestimated the role of gas clouds in these violent expirations.
Produced by Luke Groskin
Music by Audio Network
Additional Video and Stills by
Lydia Bourouiba
John Bush
Shutterstock
Prelinger Archives
Why do your fingers get pruney after a swim? Only a handful of researchers, including Einar Wilder-Smith, Mark Changizi, and Tom Smulders, have looked into the phenomenon. Publishing in Biology Letters, Smulders lends a hand to the hypothesis, set forth by Changizi and colleagues, that finger wrinkles improve our grip of wet objects.
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As a choreographer who often collaborates with dancers with disabilities, Merry Lynn Morris has long thought that traditional manual and power wheelchair designs were constraining. Her work in integrative dance, along with her experience growing up with a father who relied on a wheelchair, inspired her to invent a power wheelchair designed for artistic expression. Equipped with omnidirectional movement, a rotating seat, and a hands-free control, the chair enables dancers to explore new movement techniques, and may one day provide greater mobility in everyday life, too.
http://www.sciencefriday.com
Up and down the West coast of the U.S., bees are leaving their hives, flying around at night and then suddenly dropping dead. Learn all about this parasitic horror that quietly zombifies these insects and how you can become a real-life zombee hunter.
Biology graduate student Tom McDonagh is taking shadow puppetry to the next level. One of his latest productions is based on the (true) story of an American doctor and French inventor who took to the skies in a hydrogen balloon and made the first trip -- by air -- across the English Channel. McDonagh, whose Ph.D. project at Rockefeller University has centered on building a microscope, is also experimenting with shadow puppet production -- from laser cut puppets to 3D shadows. McDonagh and puppeteers Jo Jo Hristova, Arlee Chadwick and Emma Wiseman will be performing several of his pieces at Puppet Festival rEvolution on August 6th, 2013 in Swarthmore, PA.
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 .
This video shows how to draw a gold sphere.
For long tutorials subscribe to Patreon: https://www.patreon.com/artistleonardo
My drawing book: http://amzn.to/1K7L8Ed
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My website: http://www.ArtistLeonardo.com/
Do you want to help me translating it into your language?
(Note: First check if it hasn´t been translated already by pressing the "CC" button on the lower part of the video).
To translate the title of the video and the subtitles, all you need to do is to please go to the following link and translate (you don't necessarily need to do the whole thing, you can do a section and other people in the community can finish it). Thank you!:
http://www.youtube.com/timedtext_video?ref=share&v=96xH-s0HoSk
If you would like to invest in a drawing, painting or sculpture by Leonardo Pereznieto, or to hire him for workshops or lectures, please write to: info@leopereznieto.com (Business only, not for personal messages.)
List of materials:
- Out of the Prismacolor Premier 150 color pencil set, I used the following:
Sand
White
Dark Brown
Crimson Lake
Sienna Brown
Lemon Yellow
Spanish Orange
Jasmine
Sand Bar Brown
50% French Grey
30% French Grey
50% Cool Grey
30% Cool Grey
Black
Colorless Blender
- Here is the link to the 150 color pencil set - http://amzn.to/2gQNq8y
- Kneaded eraser Prismacolor - http://amzn.to/2cvi6G7
- Tombow Mono Zero Eraser Square Tip - http://amzn.to/2lAMh5b
- Light gray cardboard paper.
Square ruler.
Download Fine Art-Tips mobile app:
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My website: http://www.artistleonardo.com/
I wish you great creations!
Audio file(s) provided by http://www.audiomicro.com
This tutorial shows How to Draw a Gold Sphere With Color Pencils
Visit me on FB: https://www.facebook.com/LeonardoPereznieto
Follow Fine Art Tips on Google+: http://goo.gl/TqsmiJ
My website: http://www.ArtistLeonardo.com/
Do you want to help me translating it into your language?
(Note: First check if it hasn´t been translated already by pressing the "CC" button on the lower part of the video).
All you need to do is to please go to the following link and translate. Thank you!:
http://www.youtube.com/timedte....xt_video?v=QwpgRobXy
If you would like to invest in a drawing, painting or sculpture by Leonardo Pereznieto, or to hire him for workshops or lectures, please write to: info@artistleonardo.com (Business only, not for personal messages.)
List of materials:
Blue Cold-Erase pencil
Grey cardboard paper
Markers: Tombow Dual Brush
Markers: Promarker Letraset
Color pencils: Prismacolor Premier
Kneaded eraser Prismacolor
MagicRub FaberCastell eraser
If you would like to see photos and brands of my tools, please go to my blog about materials with the following link:
http://www.fineartebooks.com/h....owtodraw_drawingscho
You may also follow me on:
My Blog: http://www.fineartebooks.com/h....owtodraw_drawingscho
My Twitter: https://twitter.com/#!/ArtistLeonardo
Fine Art Tips on Google+: http://goo.gl/TqsmiJ
My Google+ page as an artist (with my sculptures, paintings, etc): http://goo.gl/n7p96D
My Instagram: http://instagram.com/artistleonardo
My LinkedIn: http://www.linkedin.com/profile/view?id=89957576&trk=tab_pro
My Vine: https://vine.co/v/hKnn3rbwJmT
My Pinterest: http://pinterest.com/ArtistLeonardo/
My VK: http://vk.com/leonardopereznieto
My website Leonardo Pereznieto: http://www.leonardopereznieto.com/leo/Intro.html
I wish you great creations!
Audio file(s) provided by http://www.audiomicro.com
Today’s video it’s a tribute to Alejandro González Iñarritu, for his achievements in the last Oscar Awards Ceremony.
Congratulations to González Iñarritu for the three awards!
With this tutorial you’ll learn how to draw Birdman with color pencils. I will show you how to draw step by step the action figure: the muscular body, the wings and the mask. We will give a little surreal touch to the image by drawing a flock of bird that emerges from Birdman’s shoulder. I will give you the best advice to create different shades with the color pencils and the markers.
