Mathematical modeling | Nonlinear systems | Dynamical systems
An excitable medium is a nonlinear dynamical system which has the capacity to propagate a wave of some description, and which cannot support the passing of another wave until a certain amount of time has passed (known as the refractory time). A forest is an example of an excitable medium: if a wildfire burns through the forest, no fire can return to a burnt spot until the vegetation has gone through its refractory period and regrown. In chemistry, oscillating reactions are excitable media, for example the Belousov–Zhabotinsky reaction and the Briggs–Rauscher reaction. Cell excitability is the change in membrane potential that is necessary for cellular responses in various tissues. The resting potential forms the basis of cell excitability and these processes are fundamental for the generation of graded and action potentials. Normal and pathological activities in the heart and brain can be modelled as excitable media. A group of spectators at a sporting event are an excitable medium, as can be observed in a Mexican wave (so-called from its initial appearance in the 1986 World Cup in Mexico). (Wikipedia).
Resonance Reissue #2 | Live Stream Listening Party | Exploratorium
Tune in for a long-form listening party comprising of performances from boundary-pushing musicians. Discover the eclectic techniques and technologies used by these artists in a back-to-back stream of exclusive concerts hosted at the Exploratorium as part of our Resonance series. Connect yo
From playlist Resonance: Unheard Sounds, Undiscovered Music
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Keep kids inspired and find support for your virtual classroom with the Exploratorium’s free and fun educational resources. Stay curious and keep exploring, no matter what school looks like this year. → Explore more at www.exploratorium.edu/learn -- The Exploratorium is a non-profit mus
From playlist Teaching and Learning | Exploratorium
take a peak at exploratorium exhibits!
Check out cool on-line exhibits at http://www.exploratorium.edu/explore
From playlist Hands-on Exploratorium
A set of fast and furious images from the Exploratorium. To learn more, please visit: www.exploratorium.edu
From playlist Hands-on Exploratorium
Kettledrum Exhibit I Exploratorium
An exhibit at the Exploratorium, Kettledrum consists of a vibrating speaker with a membrane stretched over its top. Visitors can adjust the frequency of the speaker and see different wave patterns move across the membrane. If the frequency is right, standing waves are formed. A strobe ligh
From playlist Hands-on Exploratorium
Feast your eyes on the Exploratorium's vibrating pinscreen! A whirring, blurring swirl of patterns! www.exploratorium.edu
From playlist Exploratorium Exhibits
Resonance Final Reissue | Live Stream Listening Party | Exploratorium
Tune in for a long-form listening party comprising of performances from boundary-pushing musicians. Discover the eclectic techniques and technologies used by these artists in a back-to-back stream of exclusive concerts hosted at the Exploratorium as part of our Resonance series. Connect yo
From playlist Resonance Reissue | Unheard Sounds & Undiscovered Music
Mod-01 Lec-24 Electrical, Magnetic and Optical Properties of Nanomaterials
Nanostructures and Nanomaterials: Characterization and Properties by Characterization and Properties by Dr. Kantesh Balani & Dr. Anandh Subramaniam,Department of Nanotechnology,IIT Kanpur.For more details on NPTEL visit http://nptel.ac.in.
From playlist IIT Kanpur: Nanostructures and Nanomaterials | CosmoLearning.org
How LASERs work! (Animation with Einstein)
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From playlist Electricity & Electronics
The Data Project too Risky to Share in an Interview (Zach Quinn) - KNN Ep. 137
Zach Quinn is a data engineer and writer with a master's degree in Data Science and an undergraduate degree in journalism. During his, admittedly, short broadcast media career, Zach worked in radio, television, and digital media. At age 20, he worked as a producer for his favorite morning
From playlist Ken's Nearest Neighbors Podcast
Mod-01 Lec-23 Electrical, Magnetic and Optical Properties of Nanomaterials
Nanostructures and Nanomaterials: Characterization and Properties by Characterization and Properties by Dr. Kantesh Balani & Dr. Anandh Subramaniam,Department of Nanotechnology,IIT Kanpur.For more details on NPTEL visit http://nptel.ac.in.
From playlist IIT Kanpur: Nanostructures and Nanomaterials | CosmoLearning.org
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Program Cosmology - The Next Decade ORGANIZERS : Rishi Khatri, Subha Majumdar and Aseem Paranjape DATE : 03 January 2019 to 25 January 2019 VENUE : Ramanujan Lecture Hall, ICTS Bangalore The great observational progress in cosmology has revealed some very intriguing puzzles, the most i
From playlist Cosmology - The Next Decade
Laser Fundamentals III (cont.) | MIT Understanding Lasers and Fiberoptics
Laser Fundamentals III (cont.) Instructor: Shaoul Ezekiel View the complete course: http://ocw.mit.edu/RES-6-005S08 License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
From playlist MIT Understanding Lasers and Fiberoptics
Backflow Incense Burners Are Really Weird
Get 30% off your first month of any KiwiCo box: https://kiwico.com/stevemould Backflow Incense burners really confuse me, but I think I've figured out why the smoke falls instead of rises. You can support me on PATREON here: https://stvmld.com/7aaw_n92 You can discuss this video on REDD
From playlist Chemistry
Autism and “Astro”logy: New insights from recordings in human brain cells by Sumantra Chattarji
Kaapi with Kuriosity Autism and “Astro”logy: New insights from recordings in human brain cells (ONLINE) Speaker: Sumantra Chattarji (Senior Professor, NCBS-TIFR, Bengaluru & Visiting Professor, Simons Initiative for the Developing Brain, University of Edinburgh, UK) When: 4:00 pm to 5:3
From playlist Kaapi With Kuriosity (A Monthly Public Lecture Series)
I describe the basics of ruby laser design. I'm building a laser with about 8KJ of electrical pump energy. http://www.susiebeesley.co.uk/wp-content/uploads/2013/11/PKIlampbrochure.pdf http://www.perkinelmer.de/PDFS/downloads/dts_applicationnotehighperformanceflash_final071004.pdf http:/
From playlist Optics
AWESOME SUPERCONDUCTOR LEVITATION!!!
A quantum levitator it's a circular track of magnets above which a razor-thin disc magically levitates, seeming to defy the laws of physics. The key to the levitator is the disc, which is made of superconducting material sandwiched between layers of gold and sapphire crystal. A piece of fo
From playlist THERMODYNAMICS
From playlist Multimedia Systems