Hand-waving (with various spellings) is a pejorative label for attempting to be seen as effective – in word, reasoning, or deed – while actually doing nothing effective or substantial. It is often applied to debating techniques that involve fallacies, misdirection and the glossing over of details. It is also used academically to indicate unproven claims and skipped steps in proofs (sometimes intentionally, as in lectures and instructional materials), with some specific meanings in particular fields, including literary criticism, speculative fiction, mathematics, logic, science and engineering. The term can additionally be used in work situations, when attempts are made to display productivity or assure accountability without actually resulting in them. The term can also be used as a self-admission of, and suggestion to defer discussion about, an allegedly unimportant weakness in one's own argument's evidence, to forestall an opponent dwelling on it. In debate competition, certain cases of this form of hand-waving may be explicitly permitted. Hand-waving is an idiomatic metaphor, derived in part from the use of excessive gesticulation, perceived as unproductive, distracting or nervous, in communication or other effort. The term also evokes the sleight-of-hand distraction techniques of stage magic, and suggests that the speaker or writer seems to believe that if they, figuratively speaking, simply wave their hands, no one will notice or speak up about the holes in the reasoning. This implication of misleading intent has been reinforced by the pop-culture influence of the Star Wars franchise, in which mystically powerful hand-waving is fictionally used for mind control, and some uses of the term in public discourse are explicit Star Wars references. Actual hand-waving motions may be used either by a speaker to indicate a desire to avoid going into details, or by critics to indicate that they believe the proponent of an argument is engaging in a verbal hand-wave inappropriately. (Wikipedia).
Rope Trick for my neighborhood
During my show, a rope is spotted in my sleeve. I pull it...
From playlist My Magic
With a wave of this wand a girl appears!..... Magic ? Or Science? www.exploratorium.edu
From playlist Hands-on Exploratorium
If I could only glow from my whole body... heh, now I can. Glowstick Glowman Costume. www.NothingButCostumes.com
From playlist Amazing Stuff
When women nag.. I just hope I can do the same!
When women nag.. I just hope I can do the same!
From playlist Humor
1 quick super finger board trick. Slow motion!
From playlist Funny Videos, Parodies, Odds and ends!
In this video i demonstrate sound standing wave in a tube and i explain with diagram and equations!
From playlist WAVES
physics demonstrations Standing wave on a string (science experiments)
Physics (la physique)
From playlist WAVES
MIT 8.03SC Physics III: Vibrations and Waves, Fall 2016 View the complete course: https://ocw.mit.edu/8-03SCF16 Instructor: Yen-Jie Lee Prof. Lee introduces the traveling wave solution of the wave equation. He also shows the string "remembers" the shape of the traveling wave though energy
From playlist MIT 8.03SC Physics III: Vibrations and Waves, Fall 2016
Lec 1 - Phys 237: Gravitational Waves with Kip Thorne
Watch the rest of the lectures on http://www.cosmolearning.com/courses/overview-of-gravitational-wave-science-400/ Redistributed with permission. This video is taken from a 2002 Caltech on-line course on "Gravitational Waves", organized and designed by Kip S. Thorne, Mihai Bondarescu and
From playlist Caltech: Gravitational Waves with Kip Thorne - CosmoLearning.com Physics
Transverse & Longitudinal Waves | Waves | Physics | FuseSchool
Transverse & Longitudinal Waves | Waves | Physics | FuseSchool Waves transfer energy from one place to another. You should already know how to describe them in terms of frequency, wavelength and amplitude. In this video we’re going to look at the two ways they can be classified. Waves ar
From playlist PHYSICS: Waves
Circularly Polarized Light Explained
https://www.patreon.com/edmundsj If you want to see more of these videos, or would like to say thanks for this one, the best way to do that is by becoming a patron - see the link above :). And a huge thank you to all my existing patrons - you make these videos possible. How can light trav
From playlist Jones Matrices
L20.3 Scattering amplitude in terms of phase shifts
MIT 8.06 Quantum Physics III, Spring 2018 Instructor: Barton Zwiebach View the complete course: https://ocw.mit.edu/8-06S18 YouTube Playlist: https://www.youtube.com/playlist?list=PLUl4u3cNGP60Zcz8LnCDFI8RPqRhJbb4L L20.3 Scattering amplitude in terms of phase shifts License: Creative Com
From playlist MIT 8.06 Quantum Physics III, Spring 2018
EEVblog #1120 - How To Understand Polarised Light
Gav "The Mechatronics Guy" explains circular polarised light and demonstrates his physical laser cut models to help understand this concept in his quest to make a pixel mapped polarised light camera. How do 3D shutter glasses work? https://tinkerings.org/ EEVblog Main Web Site: http://w
From playlist Electronics Tutorials
ME565 Lecture 26: Solving PDEs in Matlab using FFT
ME565 Lecture 26 Engineering Mathematics at the University of Washington Solving PDEs in Matlab using FFT Notes: http://faculty.washington.edu/sbrunton/me565/pdf/L26.pdf Course Website: http://faculty.washington.edu/sbrunton/me565/ http://faculty.washington.edu/sbrunton/
From playlist Engineering Mathematics (UW ME564 and ME565)
MIT 8.03SC Physics III: Vibrations and Waves, Fall 2016 View the complete course: https://ocw.mit.edu/8-03SCF16 Instructor: Yen-Jie Lee Prof. Lee discusses the propagation of light in the dielectric medium. He also shows an interesting phenomena, the Brewster's angle, and demonstrates th
From playlist MIT 8.03SC Physics III: Vibrations and Waves, Fall 2016
MIT 8.03SC Physics III: Vibrations and Waves, Fall 2016 View the complete course: https://ocw.mit.edu/8-03SCF16 Instructor: Yen-Jie Lee Sound wave, a longitudinal wave, is discussed in this lecture. Prof. Lee calculates the speed of sound using two extreme cases: (1) constant temperature
From playlist MIT 8.03SC Physics III: Vibrations and Waves, Fall 2016
In The Wide Open Spaces! Ballooning! (1933)
"There's no place like home and no wider open space than the air - And the way to envy one and enjoy the other is by balloon - " M/S of people crowded around the basket of a hot air balloon. Four men stand in the basket, one of whom holds a movie camera. High angle M/S of the balloon li
From playlist The Things That Move Us: Balloons
This video is used for Hologram technology, just make the hologram device at home with a very simple way, I'll put a video of how to make the Hologram device. Enjoy!
From playlist OPTICS
13. Dispersive Medium, Phase Velocity, Group Velocity
MIT 8.03SC Physics III: Vibrations and Waves, Fall 2016 View the complete course: https://ocw.mit.edu/8-03SCF16 Instructor: Yen-Jie Lee Sending a square pulse as a basic communication tool is the main focus of this lecture. Prof. Lee discusses the phenomenon of dispersion in a realistic m
From playlist MIT 8.03SC Physics III: Vibrations and Waves, Fall 2016