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04:34
This video use the excellent "Virtual Ripple Tank" applet from Falstad.com to show how an interference pattern is formed
Views: 269 tallteacher

03:06
A ripple tank is placed above a mirror and a projection screen. A horizontal bar, whose frequency can be varied, taps the surface of the water and produces plane waves. The waves are incident on a barrier containing an adjustable opening. With a narrow single slit opening we see a plane wave emerge as a spherical wave on the other side of the barrier. This can be explained by the Huygens-Fresnel principle which states that each point in the slit forms its own spherical wavefront source. With a wider slit, more point sources arise, causing interference patterns due to the larger angles involved with a broader spatial distribution of these sources.
Views: 41493 TSG Physics

12:37

00:28
A ripple tank shows how waves reflect off boundaries. For more information on this demo and more, check out our website at:http://demos.smu.ca
Views: 39042 SMUPhysics

03:24
Old film clip "Reflections of Waves from Concave Barriers in Ripple Tank"
Views: 9889 gleong1

05:55
Great simulation for exploring wave dynamics. Simulation is available at http://www.falstad.com/ripple/
Views: 8620 Alex Barr

01:08
Video was prepared using the beautiful applet on the website http://www.falstad.com/ripple/
Views: 103 Leon Gunther

03:40
Ripple Tank Applet v1.7f I determined the position of particles against to plane waves from one side and two opposite sides while they are separated and together. My aim was to observe the difference at reflected waves from particle. In my opinion, although the mass composed from sub particles which each one has some frequencies, when they are gathered, their total reflected wave frequency is differentiated. Because the incoming waves regard all particles as a single system, also.
Views: 9 Burtay Mutlu

18:33
Views: 316 Brett Guisti

01:54
Views: 899 Nick Moore

07:40
Light is so common that we rarely think about what it really is. But just over two hundred years ago, a groundbreaking experiment answered the question that had occupied physicists for centuries. Is light made up of waves or particles? The experiment was conducted by Thomas Young and is known as Young's Double Slit Experiment. This famous experiment is actually a simplification of a series of experiments on light conducted by Young. In a completely darkened room, Young allowed a thin beam of sunlight to pass through an aperture on his window and onto two narrow, closely spaced openings (the double slit). This sunlight then cast a shadow onto the wall behind the apparatus. Young found that the light diffracted as it passed through the slits, and then interfered with itself, created a series of light and dark spots. Since the sunlight consists of all colours of the rainbow, these colours were also visible in the projected spots. Young concluded that light consist of waves and not particles since only waves were known to diffract and interfere in exactly the manner that light did in his experiment. The way I have always seen this experiment performed is with a laser and a manufactured double slit but since the experiment was conducted in 1801 I have always thought that it should be possible to recreate the experiment using sunlight and household materials. That is basically what I did here. I will show the interference pattern I observed with my homemade double slit on 2Veritasium but I chose to use a manufactured double slit here to ensure that the pattern was impressive for observers at the beach. Special thanks to Henry, Brady, and Rupert for their cameos, Glen for filming and Josh for helping create the apparatus. Thanks also to the Royal Society for allowing us to view the original manuscript of Young's lecture and the University of Sydney for lending the double slits. Music by Kevin Mcleod (incompetech.com) Danse Macabre, Scissors
Views: 3419971 Veritasium

00:58
The waves on the surface of the water are neither longitudinal nor transverse. We can see in animation that red ball, which simulates the molecule of the water surface, moves in a circle path. So, the wave on the water surface is the superposition of transverse and longitudinal motions of the molecules. The molecules on the water surface move under the action of surface tension and gravity. Next animation simulates the wave motion of the molecules in the surface layer of water (or other liquid). If the amplitude of this wave is small, then every molecule moves in a circle path. The radii of these circles are diminishing with depth, so the balls in bottom part of animation are still.
Views: 180593 Alexander C

00:27
Let us consider two small balls, which oscillate on the water surface. Every ball excites the wave, which interferes with the wave from the other ball. As a result we see on the water surface a typical interference pattern. http://physics-animations.com/
Views: 119207 Alexander C

00:48
A 3-d animation of two point sources of circular waves and a view from multiple perspectives of the interference pattern produced
Views: 28076 ausautarch

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00:15
The single slit diffraction is illustrated via the use of finite-difference time-domain (FDTD) simulation in which slits with various widths are illuminated by electromagnetic plane waves at a single frequency. When the impinging plane waves reach the slits, they are diffracted into a series of circular waves and the emerging wavefront from the slits become cylindrical waves. Diffraction is basically the phenomenon involving the bending of waves around obstacles and the spreading out of the waves past small openings. Huygen's Principle states that every point on a wavefront acts as a source of tiny wavelets moving forward with the same speed as the wave and the wavefront is the surface tangent to these wavelets. Beugung, Difracción, Diffrazione, Kırınım, 回折, Дифракция, Diffractie, Difração, 衍射, Dyfrakcja, Diffraktion, Interferenz, Interferencia, Young's slit,
Views: 21458 meyavuz

02:49
Introduction for using PhET Interactive Simulation for Bending light when looking at wave refraction.
Views: 752 Science Karate

07:40
exemplo de geração de ondas, difração e reflexão utilizando o applet em: http://www.falstad.com/ripple/
Views: 186 Andre Peres

00:28
This video shows plane wave reflection off a concave parabola.

00:17
Creation of Harmonic wave. Screen record from applet "Wave On String" by http://phet.colorado.edu
Views: 189 Nikodemus Karlsson

00:25
This animation show the interference of two wave sources. The animation finishes by adding visual clues to the interfering wave fronts for both constructive and destructive interference.

03:39

01:50
A physics revision video all about refraction.
Views: 26459 expertmathstutor

17:31
Single slit and double slit interference patterns explained with phasor diagrams.

11:21
Views: 528 Brett Guisti

04:27
Thanks for watching my first video ^^
Views: 733 LizoDesigns

05:40
Simulation showing two sources interfering. Simulation available at the "Two Source Interference" link at http://www.cabrillo.edu/~jmccullough/Applets/Applets_by_Topic/Superposition_Interference.html
Views: 517 Alex Barr

00:13
We have added a soundtrack to this animation at: http://youtu.be/0cztIj1m7e4. However, it is part of a larger sequence, which is designed to accommodate agreements, disagreements and questions. So if you would like to see the animation in context or participate in a discussion, please visit http://allreality.com/quantum-physics.
Views: 50133 AllRealityVideo

00:25
This is an experimental upload of a high definition version of an older animation

02:46
This video explains about Vernier Caliper and its uses. This is a product of Mexus Education Pvt. Ltd., an education innovations company based in Mumbai, India. http://www.mexuseducation.com, http://www.ikenstore.in
Views: 2780 Iken Edu

00:09
Interference of partially canceling shaped pulses on a string is illustrated. This partial cancellation is called destructive interference.

10:46
Apresentação da aplicação Sound Waves. http://phet.colorado.edu/simulations/sims.php?sim=Sound

05:11
Intro to water tank simulator Assignment at: http://www.atmosedu.com/meteor/Labs/MassBalanceWaterTank2014.doc Simulator: http://www.atmosedu.com/meteor/ejs/ejs_WTAA.jar
Views: 175 Robert MacKay

01:15
Clapotis is a term kayakers use for reflected waves combining with the incoming waves in predictable patterns causing an area of disturbed water where wave heights can explosively spike. - http://www.walter-fendt.de/ph14e/stwaverefl.htm -
Views: 3874 Willi Water

09:42
Views: 3496 Edusitenatuurkunde

14:42
In this lesson learners are introduced to Huygen's Principle, which tells us that we can predict the shape and position of a new wavefront, since it is the envelope that encloses all of the wavelets arising from point sources on the previous wavefront. By applying this principle to a wave that moves past a barrier, learners discover that waves are diffracted as they pass a barrier, and a wave that passes through a gap is curved on both sides of the wavefront. Learners are then shown a laboratory experiment where a laser light is shone through a narrow slit, forming a diffraction pattern on a screen. The lesson then shows learners how Huygen's Principle helps us to understand how this diffraction pattern is formed. Learners are then taught the equation to use for predicting the spacing of this pattern. ( E00067129 )
Views: 67127 Mindset Learn

11:10
The following simulation: http://www.walter-fendt.de/ph14e/huygenspr.htm is used to explain the reflection and refraction of waves by Huygens Principle.
Views: 11730 Gyaneshwaran G

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Les 5: Licht in een medium en lenzen Falstad, Ripple Tank: http://www.falstad.com/ripple/ Phet, Bending Light: http://phet.colorado.edu/en/simulation/bending-light Fu-Kwun Hwang, Thin Lens Applet: http://www.phys.hawaii.edu/~teb/java/ntnujava/Lens/lens_e.html Hoe groot is een regenboog? http://www.youtube.com/watch?v=2HP1Iq4OU-4
Views: 673 Peter Duifhuis

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CircuitJS1 Introduction CircuitJS1 is an electronic circuit simulator that runs in the browser. It was originally written by Paul Falstad as a Java Applet. It was adapted by Iain Sharp to run in the browser using GWT. For a hosted version of the application see: Paul's Page: http://www.falstad.com/circuit/ Iain's Page: http://lushprojects.com/circuitjs/ Thanks to Edward Calver for 15 new components and other improvements. Thanks to Rodrigo Hausen for file import/export and many other UI improvements. Thanks to J. Mike Rollins for the Zener diode code. Thanks to Julius Schmidt for the spark gap code and some examples. Thanks to Dustin Soodak for help with the user interface improvements. Thanks to Jacob Calvert for the T Flip Flop. https://github.com/pfalstad/circuitjs1

08:24
This is a podcast that i made to prepare myself for the actual presentation. there are errors in the articulations that i hope i would aviod during the actual presentation later. :) Title: Physics Educators as Designers of Simulations using EJS part 2 Presenter: Loo Kang Lawrence Wee Venue: 200C, Ontario Convention Center Date: 08 February 2012 Time: 8:50AM - 9:00 AM Program: http://www.aapt.org/Conferences/wm2012/upload/aapt-program-final2a.pdf Abstract: To deepen do-it-yourself (DIY) technology in the physics classroom, we seek to highlight the Open Source Physics (OSP) community of educators that engage, enable and empower teachers as learners so that we create DIY technology tools-simulation for inquiry learning. We learn through Web 2 online collaborative means to develop simulations together with reputable physicists through the open source digital library. By examining the open source codes of the simulation through the Easy Java Simulation (EJS) toolkit, we are able make sense of the physics from the computational models created by practicing physicists. We will share newer (2010-present) simulations that we have remixed from existing library of simulations models into suitable learning environments for inquiry of physics. We hope other teachers would find these simulations useful and remix them that suit their own context and contribute back to benefit all humankind, becoming citizens for the world Abstract Footnotes: website prior to the meeting http://www.phy.ntnu.edu.tw/ntnujava/index.php?board=28.0 Extension of Wee, L. K. (2010, 20 July). Physics Educators as Designers of Simulation using Easy Java Simulation (EJS). Paper presented at the American Association of Physics Teachers National Meeting Conference: 2010 Summer Meeting, Portland, Oregon, USA. video and paper can be found here http://weelookang.blogspot.com/2010/07/physics-educators-as-designers-of.html

09:24
In this video, I explain the phenomenon of Total Internal Reflection -- when an incident light ray is moving from a dense medium to one that is less dense, it is typically refracted away from the normal (an imaginary line drawn at 90 degrees to the surface of the boundary between the two materials). If the wave strikes the boundary at an angle larger than a particular critical angle with respect to the normal to the surface, we see total internal reflection of that wave (the reflected ray).
Views: 116 mr i explains

06:29
Bu projede bilimsel yayınların elektronik ortamda oluşturulması, incelenmesi ve yayınlanması süreçleri yer almaktadır.
Views: 123 Zafer Cömert

04:53
En este video muestro las distintas herramientas del EJS y para qué sirven.
Views: 224 nativosdigitalesUTN

00:18
Vandaag had onze TOA de golfbak zó mooi aan de gang. Het interferentie-patroon met de knoop- én buiklijnen (uitdoving, versterking) was prachtig zichtbaar. Vaak vind ik het nodig om het effect écht goed zichtbaar te maken met behulp van een applet. Zie suggesties. Even later vond het verschijnsel "in het echt" plaats: regendruppels vielen uit de bomen rondom de vijver van de Mendel-tuin. http://www.virtueelpracticumlokaal.nl/waveSuperposition_nl/waveSuperposition_nl.html http://www.virtueelpracticumlokaal.nl/golfbak_nl/golfbak_nl.html http://home.kpn.nl/h.bruning/applets/golfbak/golfbak.htm
Views: 1194 Jan Peter van Zijl

04:18
Make sure to watch it in the highest quality, so you can see what I'm typing! :) The first installment in my series of Java tutorials, includes installation and basic operation of eclipse. These tutorials are so easy, you don't have an excuse! So watch it now, and be coding in minutes.
Views: 281 EasyJavaTutorials

10:06
Ένα πείραμα στο οποίο παρουσιάζεται το φαινόμενο κατά το οποίο τα αντικείμενα μέσα στο νερό φαίνονται σε υψηλότερη θέση από ότι είναι ή πραγματική τους θέση, λόγω του φαινομένου της διάθλασης, Ηλεκτρομαγνητικά κύματα ,διάθλαση, ανάκλαση, δείκτης διάθλασης, ταχύτητα διάδοσης του φωτός, μήκος κύματος, συχνότητα κύματος, περίοδος κύματος, θεμελιώδης εξίσωση της κυματικής, οπτική, νόμος του snell, νόμος ανάκλασης, νόμος διάθλασης, εξίσωσεις maxwell ,συμβολή και περίθλαση κύματος, ολική ανάκλαση, οπτικά πυκνότερο, οπτικές ίνες, An experiment in which the phenomenon in which objects appear in the water at a higher position than is the actual position, due to the phenomenon of diffraction, Electromagnetic waves, refraction, reflection, refractive index, propagation speed of light, wavelength, wave frequency, wave period, fundamental equation of wave, visual, Law snell, reflection Law, refraction law equation maxwell, contribution and wave diffraction, total reflectance optically denser, optical fibers,

03:14
Μια κόκκινη δέσμη laser He-Ne πέφτει κάθετα σε ένα δίσκο CD. Στο δίσκο υπάρχει μια πολύ λεπτή διαγράμμιση που δρα σαν φράγμα περίθλασης τη ς δέσμης. Το αποτέλεσμα είναι πολλές ανακλώμενες δέσμες. Αρχικά βλέπουμε αυτή που ανακλάται κάθετα και μια δεύτερη ψηλότερα. Όταν πλησιάσουμε το δίσκο θα δούμε περισσότερες.

11:05
Michaelson and Morley Applet: http://www.kcvs.ca/site/projects/specialRelativity.html
Views: 127 Damian McNeil

02:30
Μια εφαρμογή σε υπολογιστικό φύλλο για τη μελέτη της ανάκλασης, διάθλασης, ολικής ανάκλασης ακτίνας φωτός (ηλεκτρομαγνητικών κυμάτων). Ανάκλαση, διάθλαση, ολική ανάκλαση, υπολογιστικά φύλλα, light reflection, light refraction, total reflection