Ten-of-diamonds decahedron

How to construct an Octahedron

How the greeks constructed the 2nd platonic solid: the regular octahedron Source: Euclids Elements Book 13, Proposition 14. In geometry, an octahedron is a polyhedron with eight faces, twelve edges, and six vertices. The term is most commonly used to refer to the regular octahedron, a Plat

From playlist Platonic Solids

Eleftherios Pavlides - Tetradecahedron as Palimpsest of the Monododecahedral 1- G4G14 Apr 2022

Tetradecahedron as Palimpsest of the Monododecahedral 1-Parameter Family of the Polymorphic Elastegrity Subtitle: Making Paper Bubbles The polymorphic elastegrity was discovered in 1982 through paper folding and weaving in response to two basic design exercises given in 1971 and 1972 at

From playlist G4G14 Videos

MegaFavNumbers: Plus One Primes, 154,641,337, and 62,784,382,823

My entry in the #MegaFavNumbers series looks at a particularly striking example of a very specific family of primes -- and how it connects to what digits can be the final digit of primes in different bases.

From playlist MegaFavNumbers

Ex: Determine the Product of a Whole Number and Decimal using Base Ten Blocks

This video explains how to determine the product of a whole number and decimal using base ten blocks. Site: http://mathispower4u.com

From playlist Number Sense - Decimals, Percents, and Ratios

What's an Octagon? Geometry Terms and Definitions

An introduction to the octagon, a fundamental geometric shape. Geometer: Louise McCartney Artwork: Kelly Vivanco Director: Michael Harrison Written & Produced by Kimberly Hatch Harrison and Michael Harrison ♦♦♦♦♦♦♦♦♦♦ Ways to support our channel: ► Join our Patreon : https://www.patre

From playlist Socratica: The Geometry Glossary Series

What is CERN? - Sixty Symbols

Professor Ed Copeland gives his own explanation and brief history of CERN - a Mecca for physicists and home of the Large Hadron Collider. CERN website: http://public.web.cern.ch/public/ Visit our website at http://www.sixtysymbols.com/ We're on Facebook at http://www.facebook.com/sixtysym

From playlist Large Hadron Collider - Sixty Symbols

Mod-01 Lec-12 Surface Effects and Physical 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

Numicon

Recorded with https://screencast-o-matic.com

From playlist Lockdown 2021

Foldable Polyhedron 1

Delta-Star is a polyhedral object which I invented in 1996. The type of Delta-Star corresponds to Deltahedrons. It expands and shrinks. Especially highly symmetric tetrahedron,octahedron,icosahedron types and hexahedron,decahedron types can transform smoothly.

From playlist Handmade geometric toys

Ex: Determine the Product of Two Decimals Using Base Ten Blocks (1 digit)

This video explains how to determine the product of two 1-digit decimals using base ten blocks. Site: http://mathispower4u.com

From playlist Number Sense - Decimals, Percents, and Ratios

A space-filling polyhedron, based on the Weaire-Phelan foam

The Weaire-Phelan foam is a relaxation of a packing of irregular dodecahedra and tetrakaidecahedra. Dissect the dodecahedra into pentagon-based pyramids by adding a vertex at the center, then glue their bases to the surrounding tetrakaidecahedra. Amazingly the faces line up and the result

From playlist Geometry

Bjoern Muetzel - Mirror Solids - G4G14 Apr 2022

We attached mirror surfaces to the faces of Archimedean and Platonic solids. Looking inside a fascinating fractal landscape reveals itself.

From playlist G4G14 Videos

Is the Universe Finite or Infinite? The Implications of an Infinite Universe

Two possibilities exist: either the Universe is finite and has a size, or it's infinite and goes on forever. Both possibilities have mind-bending implications. Support us at: http://www.patreon.com/universetoday More stories at: http://www.universetoday.com/ Follow us on Twitter: @universe

From playlist Cosmic Microwave Background Radiation

Piotr Sniady: Representation theory from the random matrix perspective

Talk at the conference "Noncommutative geometry meets topological recursion", August 2021, University of Münster. Abstract: In many cases a representation of a group can be viewed as a "random matrix with non-commutative entries". This viewpoint gives a heuristic explanation for many links

From playlist Noncommutative geometry meets topological recursion 2021

Conversion Arcs and 2,916,485,648,612,232,232,816 (MegaFavNumbers)

I'm sorry. The MegaFavNumbers playlist: https://www.youtube.com/playlist?list=PLar4u0v66vIodqt3KSZPsYyuULD5meoAo

From playlist MegaFavNumbers

A Maths Puzzle: Salem Witches

I made a puzzle, I made props, I made a video. But can you work it out?

From playlist My Maths Videos

Snell's Law & Index of Refraction Practice Problems - Physics

This physics video tutorial provides a basic introduction into snell's law which shows the relationship between the angle of incidence and the angle of refraction given the index of refraction of the two materials. This video explains how to calculate the speed of light of water given the

From playlist New Physics Video Playlist

Decimal Notation: Rounding Decimals

This video explains how to round decimals to a given place value. http://mathispower4u.com

From playlist Number Sense - Decimals, Percents, and Ratios

Complementary Events (2 of 2: Playing card examples)

More resources available at www.misterwootube.com

From playlist Relative Frequency and Probability

Rounding Decimals to a Desired Accuracy

Thanks to all of you who support me on Patreon. You da real mvps! $1 per month helps!! :) https://www.patreon.com/patrickjmt !! Rounding Decimals to a Desired Accuracy. Here we look at a couple of examples of rounding decimals to a specified accuracy (tenths, hundredths, thousandths, e

From playlist All Videos - Part 2