Exact solutions in general relativity

Van Stockum dust

In general relativity, the van Stockum dust is an exact solution of the Einstein field equation in which the gravitational field is generated by dust rotating about an axis of cylindrical symmetry. Since the density of the dust is increasing with distance from this axis, the solution is rather artificial, but as one of the simplest known solutions in general relativity, it stands as a pedagogically important example. This solution is named after Willem Jacob van Stockum, who rediscovered it in 1937 independently of a much earlier discovery by Cornelius Lanczos in 1924. It is currently recommended that the solution be referred to as the Lanczos–van Stockum dust. (Wikipedia).

Video thumbnail

How to Make/Build a Van de Graaff Generator Part 1 (Homemade/DIY)

Step-by-step description of making a Van de Graaff generator built using parts from around the house such as a Coke can and rubber bands. I also show how to test it using an electroscope. For Part 2 of How to Make a Van de Graaff Generator, including more getting 20% better performance, r

From playlist Currently Popular

Video thumbnail

Chaos6 Chaos en het hoefijzer

www.chaos-math.org

From playlist Chaos nederlands

Video thumbnail

What Actually Are Space And Time?

Use code HISTORY16 for up to 16 FREE MEALS + 3 Surprise Gifts across 7 HelloFresh boxes plus free shipping at https://bit.ly/3Rkknac ! --------------------------------------------------------------------- If you like this video, check out writer Geraint Lewis´ excellent book, co-written wi

From playlist The Entire History of the Universe

Video thumbnail

How to Make a Van de Graaff Generator Part 2

Details on how to make a Van de Graaff generator. This part improves on the Van de Graaff made in part 1, showing how to make a better dome, out of a soda can, for 20% better performance, many options for grounding the brush near the motor, different materials for making rollers including

From playlist Van de Graaff Generators

Video thumbnail

Everything Matters | Vanadium | Ron Hipschman

Come be in your elements with Exploratorium host and scientific raconteur Ron Hipschman. Follow tales of intrigue and invention, join in dynamic demonstrations, and uncover fascinating connections between individual elements and our collective human experience. Vanadium, a transition meta

From playlist Tales from the Periodic Table

Video thumbnail

Vanadium - Periodic Table of Videos

New video on the element Vanadium. See also Bismuth Vanadate: https://youtu.be/DQYoWAKJTFc Videos on all the elements: http://bit.ly/118elements This video features Dr Darren Walsh and Professor Sir Martyn Poliakoff. And Neil's hands. More chemistry at http://www.periodicvideos.com/ Fol

From playlist All Chemical Elements in Order - Periodic Videos

Video thumbnail

Vanadium (version 1) - Periodic Table of Videos

NEWER, UPDATED VANADIUM VIDEO: https://youtu.be/MbCmaQzrZoc Vanadium is element number 23 on the periodic table. More links in description below ↓↓↓ Support Periodic Videos on Patreon: https://www.patreon.com/periodicvideos A video on every element: http://bit.ly/118elements More at ht

From playlist With Portuguese subtitles (Português) - Periodic Videos

Video thumbnail

Is Time Travel Impossible?

PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Check out the Space Time Merch Store https://pbsspacetim

From playlist Teach physics with fun! (video games, sci-fi, etc...)

Video thumbnail

IDEAL GAS - a quick definition

A quick definition of an ideal gas. 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.pa

From playlist Chemistry glossary

Video thumbnail

Art is for everyone! What is VANITAS?

A quick definition of "Vanitas." Art Lover: 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.paypal.

From playlist Art glossary

Video thumbnail

The Chemist Decoding Our Cosmic Origins | Great Minds: Ewine van Dishoeck

This episode was made in partnership with The Kavli Prize. The Kavli Prize honors scientists for breakthroughs in astrophysics, nanoscience and neuroscience — transforming our understanding of the very big, the very small, and the very complex. To learn more about Ewine van Dishoeck’s work

From playlist Uploads

Video thumbnail

Van de Graaff Faraday Cage Science Experiment

Van de Graaff generator experiment to test the faraday cage effect of the Van de Graaff dome. In my first How to Make a Van de Graaff Generator video I didn't put the whole top part of the VDG inside the dome, as is normally done. Instead I just ran the wire from the brush into the dome. A

From playlist Van de Graaff Generators

Video thumbnail

A Deadly Arizona Heist (True Crime Documentary) | Real Stories

When a bundle of money goes missing in Arizona, the FBI is on the trail. To make matters worse, the two guards hired to protect the cash are gone, too. Real FBI cases are recounted through reenactments and interviews, due to the sensitive nature of the show, viewer discretion is advised.

From playlist Crime Documentaries

Video thumbnail

Integrable stochastic interacting systems (Lecture - 1) by Tomohiro Sasamoto

PROGRAM :UNIVERSALITY IN RANDOM STRUCTURES: INTERFACES, MATRICES, SANDPILES ORGANIZERS :Arvind Ayyer, Riddhipratim Basu and Manjunath Krishnapur DATE & TIME :14 January 2019 to 08 February 2019 VENUE :Madhava Lecture Hall, ICTS, Bangalore The primary focus of this program will be on the

From playlist Universality in random structures: Interfaces, Matrices, Sandpiles - 2019

Video thumbnail

The dust bunnies that built our planet - Lorin Swint Matthews

Investigate the theories surrounding cosmic dust bunnies and discover how the tiny particles could hold the key to the formation of life on Earth. -- Consider the spot where you’re sitting. Travel backwards in time and it might’ve been submerged at the bottom of a shallow sea, buried un

From playlist The wonders of Earth

Video thumbnail

The unexpected math behind Van Gogh's "Starry Night" - Natalya St. Clair

Check out our Patreon page: https://www.patreon.com/teded View full lesson: http://ed.ted.com/lessons/the-unexpected-math-behind-van-gogh-s-starry-night-natalya-st-clair Physicist Werner Heisenberg said, “When I meet God, I am going to ask him two questions: why relativity? And why turbu

From playlist New TED-Ed Originals

Video thumbnail

America’s Most Daring Heists: Inside the FBI Files | Real Stories True Crime Marathon

4 back-to-back episodes of FBI Files. Season 4 Episode 6: In Arizona, a shipment of money vanished without a trace, along with the two men hired to guard it. Agents didn't know if the guards were willing participants or victims of an ambush. When the vehicle was recovered -- but with hundr

From playlist True Crime Stories

Video thumbnail

Space Robotics (live public talk)

Original air date: Oct. 20 at 7 p.m. PT (10 p.m. ET, 02:00 UTC/GMT) The ability to rove the surface of Mars has revolutionized NASA missions. With more advanced mobility, cliff faces, cave ceilings, and the surfaces of asteroids and comets could be explored. This talk will present the wor

From playlist Technology

Video thumbnail

Non-Ideal Gases and the Van der Waals Equation

We learned about ideal gases, as well as kinetic molecular theory, which explains the laws that govern ideal gases. But some of the postulates of this theory won't always hold true. When a gas is highly pressurized and/or very cold, it will deviate from ideal gas behavior. Why might this b

From playlist General Chemistry

Video thumbnail

Bifurcations of chaotic attractors by Viktor Avrutin

PROGRAM DYNAMICS OF COMPLEX SYSTEMS 2018 ORGANIZERS Amit Apte, Soumitro Banerjee, Pranay Goel, Partha Guha, Neelima Gupte, Govindan Rangarajan and Somdatta Sinha DATE: 16 June 2018 to 30 June 2018 VENUE: Ramanujan hall for Summer School held from 16 - 25 June, 2018; Madhava hall for W

From playlist Dynamics of Complex systems 2018

Related pages

Stationary spacetime | Abelian Lie algebra | Ansatz | Covariant derivative | Closed timelike curve | Cornelius Lanczos | Dust solution | Divergence | Fluid solution | Gödel metric | Killing vector field