http://www.greenpowerscience.com/ DEMONSTRATION MODEL OF A FRESNEL LENS PERFECT FOR FAST DEMOS
From playlist FRESNEL LENS
Fresnel Lens used to BOIL WATER WITH SOLAR POWER
http://www.greenpowerscience.com/ LARGE FRESNEL LENS
From playlist FRESNEL LENS
Here we show a quick way to set up a face in desmos using domain and range restrictions along with sliders. @shaunteaches
From playlist desmos
Nordenfelt 2-barrel Anti-Torpedo-Boat gun
Animation of a 2-barrel Nordenfelt 1 inch anti-torpedo boat gun, circa 1885. Nordenfelt's first mechanism, as used in the 4-barrel gun, was rather cumbersome. This second system was much more compact, and was used on other models, including 5-barrel rifle calibre guns.The 2-barrel gun was
From playlist Hand powered machine guns
SU(n)–Casson invariants and symplectic geometry - Shaoyun Bai
Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Topic: SU(n)–Casson invariants and symplectic geometry Speaker: Shaoyun Bai Affiliation: Princeton Date: March 26, 2021 For more video please visit http://video.ias.edu
From playlist Mathematics
Slider crank mechanism with satellite pulley
The diameter of the big pulley is double the one of the green pulley. The length of each crank = R The slider's stroke = 4R The belt should be toothed. It is possible to use chain drive instead of belt one. STEP files of this video: http://www.mediafire.com/file/frn0cmys8sedruy/SliderCrank
From playlist Mechanisms
Graduate Conservation Internships and Fellowships and Teaching Undergraduate Courses at Yale
Ian McClure (moderator), Yale University Art Gallery, New Haven, USA Graduate conservation internships and fellowships and teaching undergraduate courses at Yale. Presented at the UN Global Colloquium of University Presidents at Yale University held on April 12, 2016. The colloquium pres
From playlist The Role of Universities and our Cultural Heritage: Education and Training
Jack Calcut: Mazur and Jester 4-manifolds
Jack Calcut, Oberlin College Title: Mazur and Jester 4-manifolds Mazur and Po{\'e}naru constructed the first compact, contractible manifolds distinct from disks. More recently, Sparks modified Mazur's construction and defined Jester manifolds. Sparks used Jester manifolds to produce compac
From playlist 39th Annual Geometric Topology Workshop (Online), June 6-8, 2022
An embodiment of "Sarrus linkage 1". Two planes of two planar slider-crank mechanisms are not necessary to be perpendicular to each other. It is enough that they are not parallel.
From playlist Mechanisms
Mark Hughes: Branched Coverings Over Surface Braids and (Broken) Lefschetz Fibrations
Mark Hughes, Brigham Young University Title: Branched Coverings Over Surface Braids and (Broken) Lefschetz Fibrations on Non- compact 4-Manifold In this talk I will discuss a construction of Lefschetz type fibrations on 4–manifolds via coverings branched over braided surfaces. When applied
From playlist 39th Annual Geometric Topology Workshop (Online), June 6-8, 2022
Yi Xie - Surgery, Polygons and Instanton Floer homology
June 20, 2018 - This talk was part of the 2018 RTG mini-conference Low-dimensional topology and its interactions with symplectic geometry Many classical numerical invariants (including Casson invariant, Alexander polynomial and Jones polynomial) for 3-manifolds or links satisfy surgery fo
From playlist 2018 RTG mini-conference on low-dimensional topology and its interactions with symplectic geometry I
Hydraulic cylinder with fixed piston
Green cylinder with machine table reciprocates. Pressure fluid is conducted into cylinder via holes on fixed piston rod. The hoses can be stationary. In case using holes on the cylinder the hoses have to move with the cylinder. The arrows show flows of pressure fluid.
From playlist Mechanisms
It’s perfectly normal to feel weak, lost, and unable to cope. Here is a collection of thoughts to remind us of our inner reserves of resilience. Sign up to our mailing list to receive 10% off your first order with us: https://r1.dotdigital-pages.com/p/6TU0-63X/hellotsol If you want to kee
From playlist SELF
Emily Stark: The visual boundary of hyperbolic free-by-cyclic groups
Abstract: Given an automorphism of the free group, we consider the mapping torus defined with respect to the automorphism. If the automorphism is atoroidal, then the resulting free-by-cyclic group is hyperbolic by work of Brinkmann. In addition, if the automorphism is fully irreducible, th
From playlist Topology
The Mandelbrot set is a churning machine
Its job is to fling off the red pixels and hang onto the green ones. Audio by @Dorfmandesign
From playlist mandelstir
Subscribe to BrainCraft! http://ow.ly/rt5IE More Microbe Week videos! (Click "show more" for links) Gross Science: What Really Causes Cavities? https://youtu.be/WU05zZJKSdE AMNH: https://www.youtube.com/watch?v=mTdeZU_8cLI Science Friday: Your Very Special Bacterial Cloud https://youtu.be
From playlist Science in Stop-Motion
How Can Moms Successfully Re-enter the Workplace?
Can moms or moms-to-be make a successful return to the workplace? Cheryl Casone, Fox Business Network anchor and author of “The Comeback," joins Lunch Break and discusses how women should approach their maternity leave, and whether they should downplay motherhood when applying for jobs. P
From playlist The Search
News Of The Day "Review Of The Year" (1961)
Numerous countries as it is a news review of 1960. LS. France's first atomic bomb exploding in Sahara Desert. MS. General Charles De Gaulle President of France in front of microphones. Elevated shots, rioters in Algerian street. CU. MS. Girl kissing man behind sand bag barricade in Alg
From playlist Patrice Lumumba
A Look at HefftorLinux -- An ArcoLinux Spin with Style
Matt has hopped distros again. This time, he's trying a spin of ArcoLinux called HefftorLinux. NOTE: After editing this, I figured out why the keybindings with the function keys did not work, and it has nothing to do with HefftorLinux. The FN lock was on on my new keyboard. #IdiotMatt
From playlist Distro Reviews