hover test

A compilation of hover tests of exoatmospheric kill vehicles, the small rocket-propelled interceptors used in missile defense, including early prototypes from the late 1980s. It shows the vehicles maneuvering with thrusters in test facilities.

MedCram's Dr. Roger Seheult summarizes a discussion with Dr. Michael Mina on cheap, paper-based at-home COVID-19 antigen tests. It explains why lower sensitivity can still work well for screening infectious people.

Matt Risinger demonstrates a blower door test on a house, using a fan to measure air leakage and find where air gets in and out. It shows how the test reveals the quality of the build.

Footage of CNN reporter Omar Jimenez and his crew being arrested live on air while covering the Minneapolis protests after the killing of George Floyd. He identified himself as press and offered to move.

Footage of a protest at the University of Toronto against a talk by Warren Farrell on men's issues, including protesters blocking attendees from entering. It is part of a series of videos on similar campus protests.

JerryRigEverything puts the iPhone Air through scratch, bend and durability tests and is surprised that the ultra-thin phone proves very tough. The video is sponsored by dbrand cases.

Veritasium tells how Kodak film was fogged by radioactive fallout from the first atomic tests, letting the company detect nuclear testing before anyone announced it. The video also covers the deal to keep it quiet and how fallout contaminated packaging.

Testimony by Peter McCullough, MD, to the Texas Senate Health and Human Services Committee on March 10, 2021, about COVID-19 outpatient treatment. It was posted by the AAPS.

Destin of Smarter Every Day goes behind the scenes at the 23andMe lab to show how genotyping works. He also discusses DNA testing and privacy.

GreatScott! tests ProLogium lithium ceramic batteries, a solid-state design. He measures their volumetric and gravimetric energy density, compares them to Li-ion and LiPo, and runs durability tests at the end.

John Oliver's Last Week Tonight segment on standardized testing in American schools. It covers how tests drive school funding, the achievement gap, and the testing industry around companies like Pearson.

Linus Tech Tips tests whether USB Type-C connectors are more durable than Micro-B by repeatedly plugging and unplugging them. In the test, Micro-B failed at around 8000 insertions while USB-C kept working.

Declassified footage of 1950s tests of Project Orion, the nuclear pulse propulsion concept, including the Hot Rod prototypes flown on conventional high explosives. It shows the pusher-plate idea working in small scale.

Footage of IIHS tests of pedestrian automatic emergency braking on 16 midsize cars, with ratings from superior to basic or no credit.

Seven-minute footage of Fred Rogers testifying before a US Senate subcommittee in 1969 to defend federal funding for the new Corporation for Public Broadcasting. A skeptical Senator Pastore starts out abrasive and is won over during Rogers' brief, calm testimony.

Carl Sagan's December 1985 testimony to Congress on the greenhouse effect, about 15 minutes long. He lays out CO2 warming, the risk of runaway effects and the danger of continued coal burning.

Footage of a Minuteman III ICBM test launch and its reentry vehicles striking the Kwajalein atoll target area. It shows the missile climbing through clouds and the warheads descending.

InRangeTV's controlled mud test of an AKM, covering it in mud and testing whether it still fires, in a series that also tested the M1, M14 and AR-15.

A short unscientific fire test comparing a massive timber house with an ordinary house. It shows the wood chars and burns slowly while still holding together.

InRangeTV subjects an AR-15 to a mud test in the same mud and location as a preceding AK-47 test. It shows how the rifle runs when covered in mud.

Footage of an Airbus A380 engine blade-off test, in which a fan blade is deliberately released at full thrust to show the engine contains the failure.

A timeline visualization plotting the 2053 nuclear tests and detonations from 1945 to 1998 on a world map, with sound marking each blast. It conveys the pace of the nuclear arms race.

CNN footage of correspondent Omar Jimenez and his crew being arrested live on air by police while covering protests in Minneapolis in 2020, after identifying themselves as press.

A compilation of clips of diesel truck drivers rolling coal, blasting black exhaust smoke, at protesters. It is framed in a mocking political tone.

America's Test Kitchen tests eight carbon-steel skillets to find the best one, asking whether a single pan can replace stainless, cast iron and nonstick. It names a winner and covers how the pans perform.

Tested explains how Apple's Touch ID recognizes fingerprints, then tries to defeat it using fake fingers and prints, retracing methods claimed by a German computer club.

Builder Matt Risinger freezes water-filled copper and PEX piping capped with SharkBite fittings to see which survives. The video compares how each pipe type handles freezing.

RMC tests running a classic 68k Mac environment through emulation on an accelerated Amiga and compares it to real Mac hardware. It explores whether an Amiga can be the fastest classic Mac.

Linus Tech Tips tests a large batch of DisplayPort cables with a Total Phase cable tester, checking bandwidth and signal quality. Many cables did not meet their claimed specs.

A five-minute 4K 60fps HDR travel montage of Costa Rica by the Mystery Box video team. It is a remastered version of their popular scenic footage.

Danny MacAskill tries to destroy carbon fiber bike wheels by riding trials tricks through downtown Glasgow, including on bare rims on concrete.

The 4K, 60fps version of Big Buck Bunny, the Creative Commons-licensed animated short film from the Blender Foundation.

Guitarist Jim Lill methodically tests what in an electric guitar affects its tone, swapping parts on a partscaster and even trying a 2x4 body. He finds that wood and construction matter far less than people assume.

Adam Neely tests the claims for tuning to A=432 Hz by trying the unusual tuning systems that its proponents' numerology requires. He compares how they sound against standard tuning and temperaments.

Guitarist Jim Lill spends a year testing where guitar amplifier tone comes from, swapping tubes, rectifiers and bias types. He finds that much of it can be reproduced with EQ and distortion in different orders.

Jon Ronson, author of The Psychopath Test, gives a TED talk on the blurry line between sane and crazy and on psychopathy as a spectrum, with stories of how the label gets applied.

The Quantified Scientist, a sleep researcher, tests Apple Watch sleep tracking against a research-grade Dreem 2 headband, comparing accuracy for sleep stages, deep and REM sleep. The review is data-focused rather than feature-focused.

Smarter Every Day host Destin Sandlin tries to hover a helicopter and finds it very hard. The video shows how the constant coordinated corrections across several control axes feel at first and how learning makes them automatic.

Veritasium's Derek Muller spends an hour in a silent, dark anechoic chamber at BYU to test the claim that 45 minutes is the most anyone can bear. He reports on his experience and other people's reactions.

Jeija demonstrates a modified Minetest game with a spherical planet, using a grid transform to make a voxel world round. It includes the orbit math and download links for the spheretest build.