retaining walls

A Royal Institution event with Sean Carroll and Jennifer Ouellette on what happens if you fall into a black hole, covering the firewall paradox, the information problem and the holographic principle.

Practical Engineering explains Mechanically Stabilized Earth, where layers of reinforcement make soil strong enough to hold heavy loads, shown with a sand structure supporting a car. It notes that MSE walls are everywhere in infrastructure.

A short explainer showing what walking through walls would look like with movement in a fourth spatial dimension, using the 4D puzzle game Miegakure.

Pannenkoek explains how Super Mario 64 handles wall, floor and ceiling collisions, including triangles, normal vectors, quarter steps and out of bounds. It is a detailed 37-minute technical walkthrough of the game's physics.

Medlife Crisis asks whether academic research should sit behind paywalls, covering publisher profit margins, unpaid reviewers, Sci-Hub and Aaron Swartz. It includes an interview with Sci-Hub founder Alexandra Elbakyan.

Michael Reeves rigs up a camera and software that tracks a goldfish's movements to choose stock trades, tied to wallstreetbets sentiment. It is a comedic programming and electronics stunt.

Epic Games shows how LED walls can provide both virtual backgrounds and real lighting, letting scenes be captured in camera in a single pass with Unreal Engine.

A short 2019 montage of news clips about the Trump-Russia investigation, with the title ending in 'no collusion'. The channel gives no description.

Roaring Kitty's July 2020 analysis of GameStop, arguing a bullish deep-value case when the stock was about $4 and short interest exceeded 100%. It covers fundamentals, cash balance and technicals.

ILM shows how The Mandalorian season one used a large curved LED wall to display interactive 3D environments in camera. The video covers the virtual production setup replacing location shoots.

A long video essay on MyHouse.wad, a Doom II mod uploaded by an anonymous user that hides unsettling secrets in its walls. It tells the story of the map, its mystery and its liminal horror.

The Primitive Technology channel shows the construction of a tiled roof hut in the bush using only primitive tools and materials made in earlier videos. It includes tiles, a kiln, clay walls and underfloor heating.

Kirsten Dirksen visits architect Gary Chang's 32 square meter Hong Kong apartment, which he has redesigned over decades. Sliding walls and transformable furniture turn it into 24 different room configurations.

Builders Matt Risinger and Jordan Smith visit a Swiss cross-laminated timber factory that makes thick all-wood walls with no traditional insulation and wooden nails instead of glue or chemicals. The video is sponsored by Siga.

Insider explains how The Mandalorian replaced green screens with LED walls that project real-time 3D environments behind actors, with over half the show filmed on such virtual sets.

Archival 1978 Sandia footage testing shipping containers for spent nuclear fuel, including trucks ramming walls, a locomotive hitting a truck-borne cask and a rocket-propelled train crash, plus a fire test.