Golden ratio | Star polygons | Pythagorean symbols
A pentagram (sometimes known as a pentalpha, pentangle, or star pentagon) is a regular five-pointed star polygon, formed from the diagonal line segments of a convex (or simple, or non-self-intersecting) regular pentagon. Drawing a circle around the five points creates a similar symbol referred to as the pentacle, which is used widely by Wiccans and in paganism, or as a sign of life and connections. The word "pentagram" refers only to the five-pointed star, not the surrounding circle of a pentacle. Pentagrams were used symbolically in ancient Greece and Babylonia. Christians once commonly used the pentagram to represent the five wounds of Jesus. Today the symbol is widely used by the Wiccans, witches, and pagans. The pentagram has magical associations. Many people who practice neopaganism wear jewelry incorporating the symbol. The word pentagram comes from the Greek word πεντάγραμμον (pentagrammon), from πέντε (pente), "five" + γραμμή (grammē), "line".Pentagram refers to just the star and pentacle refers to the star within the circle specifically although there is some overlap in usage. The word pentalpha is a 17th-century revival of a post-classical Greek name of the shape. (Wikipedia).
What's a Pentagram? Geometry Terms and Definitions
Learn the mathematical name for this famous 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.patreon.com/socr
From playlist Socratica: The Geometry Glossary Series
#Mandala MANDALA LOVERS ALERT- Mandala (Sanskrit: मण्डल, lit, circle) is a spiritual and ritual symbol in Indian religions, representing the universe-check out more videos about mandala below-. * check out my Blog Post for details on Mandala supplies- https://www.theartgeekblog.com/post/mu
From playlist Bag
What Is a radian? Coffee ☕️ + Desmos 🙂 this AM = https://www.desmos.com/calculator/bcgjcpci3k. Also added to https://teacher.desmos.com/activitybuilder/custom/60742b18afd8ae0d274b6efb.
From playlist Desmos Activities, Illustrations, and How-To's
From playlist Trigonometry TikToks
This video briefly introduces CERN - what it is, a brief history, and what occurs there, and how it impacts' today's society. Like what I do? Support by buying me a coffee - www.buymeacoffee.com/physicshigh For on going support, support me at Patreon: www.patreon.com/physicshigh LIKE an
From playlist New here? A selection of what I do
Let's Build Something Together - EDU Valentine
No experience is necessary, but some assembly may be required. Welcome! We are a hands-on STEM channel. We explore physics, sensors, robotics, rovers, chemistry, science museums, and STEM competitions just to name a few. Let us know a bit about you in the comments below. We look forward
From playlist Who Is Your Educational YouTuber?
After a friend of mine got a tattoo with a representation of the cosecant function, it got me thinking about how there's another sense in which this function is a tattoo on math. ------------------ 3blue1brown is a channel about animating math, in all senses of the word animate. And you
From playlist Shorter videos
A quick definition of a molecule. Chem Fairy: Louise McCartney Director: Michael Harrison Written and Produced by Kimberly Hatch Harrison ♦♦♦♦♦♦♦♦♦♦ Ways to support our channel: ► Join our Patreon : https://www.patreon.com/socratica ► Make a one-time PayPal donation: https://www.payp
From playlist Chemistry glossary
In this video, you’ll learn more about how hashtags are used on Twitter. Visit https://www.gcflearnfree.org/twitter/what-is-a-hashtag/1/ for our text-based lesson. This video includes information on: • Using hashtags • Browsing popular hashtags We hope you enjoy!
From playlist Twitter
Valentin Ovsienko: Pentagram map and combinatorics: more open questions than solutions
Find this video and other talks given by worldwide mathematicians on CIRM's Audiovisual Mathematics Library: http://library.cirm-math.fr. And discover all its functionalities: - Chapter markers and keywords to watch the parts of your choice in the video - Videos enriched with abstracts, b
From playlist Combinatorics
Pentagram Frisbee Origami Flicker
How to fold a Pentagon shaped Frisbee with a pentagonal hole AKA Pentagram Frisbee! This model really flies well, especially folded from printer paper cut square. To fly it you can either throw it like a frisbee or flick it with your finger, or use it as a hockey puck! I like how well ba
From playlist Pindrop
A Big Mac with a Side of Glass & the Satanic Temple's Workbook for Kids | SYSK Internet Roundup
A police officer in New York City falsely accused McDonald's of putting glass in his hamburger and the Satanic Temple is distributing a workbook for children in Florida schools. Subscribe http://bit.ly/1kc7NpQ Twitter http://twitter.com/SYSKPodcast Facebook http://facebook.com/StuffYouSho
From playlist Stuff About Food
The Curse of Oak Island: Discovering a Hidden Symbol (S2, E2) | History
A rock engraving of a pentagram-esque symbol might be connected to Oak Island in this scene from "Return of the Money Pit." Subscribe for more from The Curse of Oak Island and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Catch up with this Season 4 playlist: http://po.st
From playlist History's Top Treasure Hunters | History
The Prison Cell Meditation by Damien Echols | Big Think
The Prison Cell Meditation by Damien Echols Watch the newest video from Big Think: https://bigth.ink/NewVideo Join Big Think Edge for exclusive videos: https://bigth.ink/Edge ---------------------------------------------------------------------------------- Damien Echols was wrongfully im
From playlist Best Videos | Big Think
R. William Gosper - Minsky's "Circle" Recurrence: Recent News - G4G12 April 2016
(With Rohan Ridenour) Some interesting special cases of the recurrence, including an open problem and a connection to Penrose tiles. (With animations.)
From playlist G4G12 Videos
James Grime - Nontransitive Dice for Three Players - G4G13 April 2018
Martin Gardner first described nontransitive dice 1970. The numbers on the dice are chosen in such a way that you can always pick a die with a better chance of winning than your opponent. But what about three player games? Is there a set of dice that allows you to best two opponents at the
From playlist G4G13 Videos
Drawing an Egg (with a Pentagon) - Numberphile
Featuring Johnny Ball... And see more about the egg formula at https://youtu.be/tjyFw1BX4eM More links about Johnny & stuff in full description below ↓↓↓ Johnny Ball website (with links to shows and other info): https://johnnyball.co.uk Johnny Ball books on Amazon: https://amzn.to/3uMxB67
From playlist Johnny Ball on Numberphile
Sum Of Angles In A Star - Challenge From India!
Thanks to Nikhil Patro for suggesting this problem! What is the sum of the corner angles in a regular 5-sided star? What if the star is not regular, what is the sum of corner angles then? There are some neat ways to solve this. I present my favorite methods. Thanks to all patrons! Special
From playlist Math Puzzles, Riddles And Brain Teasers
The Vitruvian pond: wave front in a 5-pointed star
This shape is not strictly speaking a pentagram, but I hope it is close enough to make all pentagram enthusiasts happy. Similarly to the video https://youtu.be/LKACTV6QWdc the shape is obtained by replacing the sides of a regular pentagon by circular arcs curving inward. The radius of the
From playlist Wave fronts in billiards (Geometric optics approximation)
Inspired by http://www.youtube.com/watch?v=PQOjkuJtBfM
From playlist Projects & Installations