shadow mask

A short TheStreet clip in which Dr. Anthony Fauci explains the purpose of masks and why guidance on them shifted during early COVID-19. He says masks protect others and offer some protection to the wearer.

Technology Connections explains the early history of analog color television, from the 1954 start of modern color broadcasting, and how shadow masks work in CRTs. It is the first in a series on how analog color TV works.

Ben Krasnow of Applied Science uses an antique 4x5 view camera to make high-resolution photolithography masks in a home shop. He photographs a poster-sized printout onto litho film to get features around 20 microns.

A 13-minute hand-animated short film that takes a symbolic journey through the unconscious, built around Carl Jung's idea of confronting the Shadow. It mixes 2D animation with spiritual and apocalyptic imagery.

Technology Connections follows up on his analog TV video to clear up the debate over whether CRT phosphor dots are pixels. He explains the shadow mask, color triads and how they relate to the scanned picture.

A short 60 Minutes clip from March 2020 in which Dr. Anthony Fauci tells Jon LaPook there is no reason to walk around wearing a mask. The full interview includes his concern about mask shortages for healthcare workers.

Destin Sandlin of Smarter Every Day undergoes hypoxia training and experiences his own impaired thinking as oxygen is withdrawn. The video shows how quickly and unnoticeably oxygen deprivation degrades judgment, illustrating why you put your own mask on first.

Asian Boss interviews Professor Kim Woo-joo of Korea University Guro Hospital about COVID-19 in early 2020. He covers masks, testing, aerosol spread, and South Korea's response.

Ten hours of uninterrupted pink noise, intended for relaxation and masking background sound. It is a long ambient audio loop rather than a spoken video.

Barely Sociable presents a case that Bitcoin creator Satoshi Nakamoto is cryptographer Adam Back. It uses interview clips and circumstantial evidence, and also touches on the block size dispute.

Joe Rogan interviews epidemiologist Michael Osterholm in March 2020 about the coronavirus. They cover how it spreads, masks, hygiene, social distancing, school closures and vaccine timelines.

The original 2009 Touhou Bad Apple!! PV, a monochrome shadow-art animation set to music from the Touhou series. It became the source of countless Bad Apple demos on other hardware.

The pilot of the British comedy series Look Around You, a deadpan parody of 1970s and 80s school science programmes, in which the scientists examine calcium.

A short clip from Carl Sagan's Cosmos in which he explains how Eratosthenes measured the circumference of the Earth using shadows in two Egyptian cities. It is a clear, visual account of an ancient scientific feat.

An RSA Animate video that illustrates a talk by geographer David Harvey on the crises of capitalism. It covers creative destruction, wage stagnation masked by credit, and the search for a more just economic order.

A segment from Carl Sagan's original Cosmos explaining the fourth spatial dimension through analogy with a two-dimensional world and shadow projection.

Huygens Optics experiments with etching tiny patterns in glass, covering hydrofluoric acid risks, buffered oxide etch, photoresist and chromium masks, and laser-induced etching. It ends with attempts at microscopic Tesla valves.

ADVChina tours Chinese ghost cities and discusses the housing bubble, with speculative buyers purchasing empty apartments as investments.

John Conway talks in a short Numberphile interview about his mixed feelings toward the Game of Life, his most famous invention. He says he is not especially pleased that it overshadowed his other work.

A demo of Brigade 3 real-time path tracing at 720p controlled with an Xbox controller. Depth of field, field of view, reflections and shadows can be altered live.

A Graphics Programming Conference talk on how the game Tiny Glade renders meadows, trees and player-built castles. It covers real-time global illumination, tilt-shift depth of field, stable shadows with continuous time of day, ray marching and GPU-driven rendering on old hardware.

A two-minute NVIDIA RTX tech demo built on Remedy's Northlight engine, showing real-time ray-traced lighting and shadows in a game scene. It was shown alongside the launch of RTX and DirectX Raytracing.

Former CIA Chief of Disguise Jonna Mendez reviews spy scenes from film and TV and explains how realistic they are, including disguise techniques and masks.

Associated Press footage of masked federal agents detaining Tufts student Rumeysa Ozturk on a street in Somerville, Massachusetts. Her lawyer filed an emergency motion seeking her release.

Veritasium explains why no voting system can be perfectly fair, drawing on Arrow's theorem and the work of Eric Maskin. It looks at problems with systems like first-past-the-post and ranked-choice voting.