How to control light with water

 

By: Physics Girl

Originally published on Dec 22, 2016

How fast is the internet? How fast can we send data? This easy DIY experiment allows you to control light with water! Drill a hole in the bottom of a 2 liter bottle, fill the bottle with water allowing the water to stream out the hole, and a shine a laser on the other side so it comes out the hole and follows the stream of water! Just like fiber optics, the laser beam gets bounced around, but stays within the stream. Controlling light in this way gives up the ability to send information MUCH faster, as opposed to sending a postcard via snail mail!

Infinite Series:
https://www.youtube.com/channel/UCs4a…

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Creator/Writer: Dianna Cowern
Animator: Kyle Norby
Writer/Researcher: Sophia Chen
Editor: Jabril Ashe

Fun new Fiber Optics video from Nat and Lo on Fiber Optics called, “Journey to the Bottom of the Internet”
https://www.youtube.com/watch?v=H9R4t…
Also found this great video by engineer guy who set up the experiment much better than we did:
https://www.youtube.com/watch?v=0MwMk…

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Map of underwater cables and landing sites:
TeleGeography
http://www.submarinecablemap.com

Stock Images: pixabay.com and clker.com

Music: APM and YouTube.

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Why Do We Love Sugar?

 

By: BrainCraft

Originally published on Nov 12, 2015

My Twitter https://twitter.com/nessyhill | Instagram https://instagram.com/nessyhill

Subscribe to BrainCraft! http://ow.ly/rt5IE

Can You be Addicted to Sugar: https://youtu.be/1aLCwDT-X6c
Are Some Sweeteners Better Than Others? https://youtu.be/6hXg_y4z3VM

BrainCraft is created and hosted by Vanessa Hill and brought to you by PBS Digital Studios. Talking psychology, neuroscience & why we act the way we do.
Sound design: Joel Werner (http://joelwerner.com)
Producer: Ella Colley

Keep in touch, won’t you?
Snapchat: nessyhill
Twitter https://twitter.com/nessyhill
Instagram https://instagram.com/nessyhill
Tumblr http://braincraft.tumblr.com
Facebook https://www.facebook.com/Braincraft

More BrainCraft!
How Old Are You, Really? https://youtu.be/aWvw-v6tnZE
The Surprising Ways Death Shapes Our Lives: https://youtu.be/Joalg73L_gw

REFERENCES

Steiner, J.E. Facial Expressions of the Neonate Infant Indication the Hedonics of Food Related Chemical Stimuli in Weiffenbach, J. M. (Ed.). (1977). Taste and development: The genesis of sweet preference. US Department of Health, Education, and Welfare, Public Health Service, National Institutes of Health. http://babel.hathitrust.org/cgi/pt?id…

Avena, N. M., Gold, J. A., Kroll, C., & Gold, M. S. (2012). Further developments in the neurobiology of food and addiction: update on the state of the science.Nutrition, 28(4), 341-343. https://dl.dropboxusercontent.com/u/3…

Lustig, R. H., Schmidt, L. A., & Brindis, C. D. (2012). Public health: The toxic truth about sugar. Nature, 482(7383), 27-29. http://www.nature.com/nature/journal/…

A history of sugar – the food nobody needs, but everyone craves https://theconversation.com/a-history…

Bello, N. T., Lucas, L. R., & Hajnal, A. (2002). Repeated sucrose access influences dopamine D2 receptor density in the striatum. Neuroreport, 13(12), 1575. http://www.ncbi.nlm.nih.gov/pmc/artic…

Preedy, V. R., Watson, R. R., & Martin, C. R. (2011). Handbook of behavior, food and nutrition. Springer Science & Business Media. https://books.google.com/books?id=KuA…

Also this is SO INTERESTING: Bes-Rastrollo, M., Schulze, M. B., Ruiz-Canela, M., & Martinez-Gonzalez, M. A. (2013). Financial conflicts of interest and reporting bias regarding the association between sugar-sweetened beverages and weight gain: a systematic review of systematic reviews. http://journals.plos.org/plosmedicine…

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The Donald Trump Caterpillar and Nature’s Masters of Disguise

 

By: It’s Okay To Be Smart

Originally published on Oct 3, 2016

They have some of the best caterpillars in Peru. The best.
Follow all of our Peru adventures on this playlist: http://bit.ly/SmartPeru
↓ More info and sources below ↓

Special thanks to Andy Warren, David Pfennig, Alex Wild, and Gustavo Londoño for helpful discussions for this video!

You should definitely be following Aaron Pomerantz:
http://www.thenextgenscientist.com/
Twitter: @AaronPomerantz
IG: @nextgenscientist

Special thanks to Rainforest Expeditions for hosting us! Visit http://www.perunature.com/

Check out Deep Look for more awesome up-close science: https://www.youtube.com/user/KQEDDeep…

Cinerous mourner nest video courtesy of Dano Grayson: http://danograyson.com/
Cinerous mourner photos by Santiago David

References:
d’Horta, Fernando Mendonça, Guy M. Kirwan, and Dante Buzzetti. “Gaudy juvenile plumages of cinereous mourner (Laniocera hypopyrra) and Brazilian laniisoma (Laniisoma elegans).” The Wilson Journal of Ornithology 124.3 (2012): 429-435.

Forbes, Peter. Dazzled and deceived: mimicry and camouflage. Yale University Press, 2011. http://amzn.to/2dE444Z

Kikuchi, David W., and David W. Pfennig. “Predator cognition permits imperfect coral snake mimicry.” The American Naturalist 176.6 (2010): 830-834.

Londoño, Gustavo A., Duván A. García, and Manuel A. Sánchez Martínez. “Morphological and behavioral evidence of Batesian mimicry in nestlings of a lowland Amazonian bird.” The American Naturalist 185.1 (2015): 135-141.

Rabosky, Alison R. Davis, et al. “Coral snakes predict the evolution of mimicry across New World snakes.” Nature communications 7 (2016).

Savage, Jay M., and Joseph B. Slowinski. “The colouration of the venomous coral snakes (family Elapidae) and their mimics (families Aniliidae and Colubridae).” Biological Journal of the Linnean Society 45.3 (1992): 235-254.

Thompson, Martin J., and Martijn JTN Timmermans. “Characterising the phenotypic diversity of Papilio dardanus wing patterns using an extensive museum collection.” Plos one 9.5 (2014): e96815.

Wickler, Wolfgang. Mimicry in Plants and Animals: Trans. by RD Martin. Weidenfeld & Nicolson, 1968.

—————-
It’s Okay To Be Smart is written and hosted by Joe Hanson, Ph.D.
Have an idea for an episode or an amazing science question you want answered? Leave a comment or check us out at the links below!
Facebook: http://www.facebook.com/itsokaytobesmart
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http://twitter.com/jtotheizzoe
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Snapchat: YoDrJoe

Produced by PBS Digital Studios
Music via APM
Stock images from SciencePhoto http://www.sciencephoto.com/ and Shutterstock http://www.shutterstock.com

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AMAZING! Ferrofluid + Glow Sticks

 

By: Physics Girl

Originally published on Oct 20, 2015

Ferrofluid is a liquid that displays unusual properties in the presence of a magnetic field. Watch what happens when we mix ferrofluid with the liquid from a glow stick!

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Host/Writer: Dianna Cowern
Editor: sefdstuff.com/science

Physics Girl has joined PBS Digital Studios! https://www.youtube.com/user/pbsdigit…

Photographer Fabian Oefner: http://fabianoefner.com/?portfolio=mi…
Magnetite Image: “Archaeodontosaurus,” Wikipedia; https://en.wikipedia.org/wiki/Magneti…

More Information:
http://addis.caltech.edu/teaching/MS9…
http://education.mrsec.wisc.edu/backg…

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Physics Girl: 5 Science Tricks w/ Explanation

 

By: Physics Girl

Published on Sep 21, 2016

Go to http://Raceforretirement.com and see how the action gap affects you.
Last week I posed a video with 5 awesome physics party tricks. This week, Jabril from SEFD came on to help explain the experiments as we test them out for the first time and work through some of the amusing kinks in the process.

SEFD Science https://m.youtube.com/channel/UCQALLe…
My favorite video: https://m.youtube.com/watch?v=6cbf5vU…

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Any tricks with matches should be done with parental supervision.

Experiments and materials:

BALANCING FORKS
– two forks
– match
– glass

RISING WATER TRICK
– plate
– glass
– water
– match
– sticky tack

DANCING PEANUTS
– carbonated water
– tap water
– peanuts
– glass

PLATE SUCTION TRICK
– wine glass
– wet paper towel
– sticky tack
– match
– olive oil
– plate

BALLOON KEBAB
– balloon
– wooden stake

Subscribe to Physics Girl for more fun physics!
Creator: Dianna Cowern
Editor: Jabril Ashe
Animator: Kyle Norby
Research: Dan Walsh

http://physicsgirl.org/
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Music: APM

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World’s Easiest DIY Electric Train

 

By: Physics Girl

Originally published on Jun 7, 2016

How do you take copper wire, a battery and magnets and make electric train? With science! This super simple DIY physics demo uses electromagnetic induction to propel a train made of magnets and batteries.

Inspiring video: https://www.youtube.com/watch?v=J9b0J…
Ferrofluid and glowsticks: https://www.youtube.com/watch?v=RtBtD…
7 surface tension experiments: https://www.youtube.com/watch?v=WsksF…

Creator: Dianna Cowern
Animator: Kyle Norby

Thanks to Dan Walsh and Kyle Kitzmiller.

Music: APM and YouTube

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Could you replace your eye with a camera?

 

By: Physics Girl

Originally published on Apr 12, 2016

How does the eye compare to a camera? How do they work, and will camera technology ever get to the point where you would want to replace your eyeball with a camera?

Vote for PBS Digital Studios Webby! Voting ends April 21st, 2016 https://pv.webbyawards.com/2016/onlin…

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Creator: Dianna Cowern
Writer: Sophia Chen
Editor: Jabril Ashe
Animator: Kyle Norby

More resources:
Stock visuals: Pixabay.com
Music: APM and YouTube

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Does this look white to you?

 

By: Physics Girl

Originally published on Oct 6, 2015

When you mix red and green, what do you get? White light is all of the colors, right? So, how do computer screens show you every wavelength of light? Or do they?

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Host/Writer: Dianna Cowern

Editor: sefdstuff.com/science

Physics Girl has joined PBS Digital Studios! https://www.youtube.com/user/pbsdigit…

RGB Image: Luís Flávio Loureiro dos Santos, https://commons.wikimedia.org/wiki/Fi…

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How 3D holograms work

 

By: Physics Girl

Originally published on Sep 15, 2015

Holograms are photographic recordings of 3D scenes. Unlike a camera, which captures one view through a small viewer focused by a lens, holograms capture an entire light field which allows them to recreate the 3D scene. Shimmery 2D projections, like pre-recorded Pepper’s ghost illusion, are often confused with 3D holograms.

Pepper’s Ghost Tutorials
https://www.youtube.com/watch?v=ygMXT…
https://www.youtube.com/watch?v=7YWTt…

instagram.com/thephysicsgirl
facebook.com/thephysicsgirl
twitter.com/thephysicsgirl
physicsgirl.org

Physics Girl has joined PBS Digital Studios! https://www.youtube.com/user/pbsdigit…

Videography: Forbidden Kingdom Digital, Cathy Cowern
Editing: Dianna Cowern and Forbidden Kingdom Digital forbiddenkingdomdigital.com

Hologram microscopic views: Richard L Howey http://www.microscopy-uk.org.uk/mag/a…
and https://en.wikipedia.org/wiki/Hologra…
Tupac Coachella Footage: https://www.youtube.com/watch?v=YgMen…

Music:
YouTube – “On the Bach,” “Good Starts”
Mozart “Eine Kleine Nachtmusik”

Stock Images: Pixabay

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Is this really 3D?

 

By: Physics Girl

Originally published on Sep 8, 2015

3D movies and TV are is increasing in popularity, but is any of it truly 3D? How true is the 3D in movie theaters? How do glassess-less 3D TVs work? Try catching a ball with one eye closed. If you find it easy, try having the ball thrown a couple of feet in front of you, or from further away. It becomes increasingly difficult when the throw is off.

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Thank you to Greg Kestin for helping to research and write this script!

Physics Girl has joined PBS Digital Studios! https://www.youtube.com/user/pbsdigit…

Hugo Trailer: https://www.youtube.com/watch?v=hR-kP…

Videography: Forbidden Kingdom Digital, Cathy Cowern and Kyle Kitzmiller –
Editing: Dianna Cowern and Forbidden Kingdom Digital forbiddenkingdomdigital.com
Holographic Video Credit: Melanie Gonick/MIT News

Music:
Michael Miller – https://soundcloud.com/michaelrmmiller
YouTube – “On the Bach,” “Path to Follow”
Apple – “Galleria Medium”

More Resources on regaining Stereoscopic vision: http://www.newyorker.com/magazine/200…
http://neurovision.berkeley.edu/pdf/S…
http://www.sciencedirect.com/science/…
http://gizmodo.com/can-gaming-help-re…
https://www.youtube.com/watch?v=XCCtp…

Stock Images: Pixabay

Driving Footage: Depock/MTSX http://www.youtube.com/user/DepockVlogs

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