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  • John Walker posted an update in the group Group logo of SCANALYZERSCANALYZER 12 hours, 2 minutes ago

    CONTEXT

    “Atomic Tests in Nevada:The Story of AEC’s Continental Proving Ground”

    A 1955 film about why residents nearby the Nevada Test Site should stop worrying and learn to love the bomb. Also see the 1955 pamphlet “Atomic Test Effects in the Nevada Test Site Region” available at Fourmilab.

  • John Walker posted an update in the group Group logo of SCANALYZERSCANALYZER 21 hours, 25 minutes ago

    TRACKING WITH CLOSEUPS

    “Rocket Lab’s Electron Rocket Fails on 13th Launch”

    Here is Scott Manley’s analysis of the failure. He did his own plot of the rocket’s acceleration from the real time telemetry in the video feed and found that the thrust of the second stage appeared to be decaying for a few seconds prior to the loss of video and complete engine shutdown.

  • John Walker posted an update in the group Group logo of SCANALYZERSCANALYZER 23 hours, 4 minutes ago

    THE HAPPENING WORLD

    “Rocket Lab’s Electron Launcher Fails on 13th Mission”

  • John Walker posted an update in the group Group logo of SCANALYZERSCANALYZER 1 day, 14 hours ago

    THE HAPPENING WORLD

    “Rocket Lab Launch from New Zealand Today”

  • John Walker posted an update in the group Group logo of SCANALYZERSCANALYZER 1 day, 22 hours ago

    THE HAPPENING WORLD

    “UK Government Rescues OneWeb from Bankruptcy”

    Why is the U.K. government investing US$ 500 million in bankrupt low-Earth orbit satellite constellation builder OneWeb? Arianespace’s filing with the bankruptcy court claims they are owed US$ 238 million for launch services already contracted.

  • John Walker posted an update in the group Group logo of SCANALYZERSCANALYZER 2 days, 12 hours ago

    CONTEXT

    “ ‘This Is Guadalcanal’ 1944 U.S. Marine Corps Documentary”

    This film, dating from a year after the battle, is basically a home front morale-boosting exercise which says little about how horrific the battle for the island (after the unopposed landing) was.

  • John Walker posted an update in the group Group logo of SCANALYZERSCANALYZER 2 days, 14 hours ago

    TRACKING WITH CLOSEUPS

    “Inside a Znter Lithium 9V Battery”

    A 9 volt rechargeable battery with a built in USB charger, protection circuitry, and a switching regulated power supply so the output voltage remains rock stable all the way to discharge cut-off.

  • John Walker posted an update in the group Group logo of SCANALYZERSCANALYZER 2 days, 14 hours ago

    THE HAPPENING WORLD

    Here is a Reuters report on the “incident” at Natanz.

  • John Walker posted an update in the group Group logo of SCANALYZERSCANALYZER 3 days, 14 hours ago

    CONTEXT

    “How Stealth Changed Modern Warfare”

    There’s an excellent description of how the Serbs managed to shoot down the F-117 in 1999.

  • John Walker posted an update in the group Group logo of SCANALYZERSCANALYZER 3 days, 21 hours ago

    THE HAPPENING WORLD

    “Greatest Deliberative Body in the World”

  • John Walker posted an update in the group Group logo of SCANALYZERSCANALYZER 4 days, 12 hours ago

    CONTINUITY

    “This Energy Monitor Plug Is Actually Really Smart Inside”

  • John Walker posted an update in the group Group logo of SCANALYZERSCANALYZER 4 days, 14 hours ago

    TRACKING WITH CLOSEUPS

    “BepiColombo Mission Comes To Kerbal Space Program. Official ESA Collaboration”

    Featuring Elsa Montagnon, Manager of Spacecraft Operations for the BepiColombo mission to Mercury.

  • John Walker posted an update in the group Group logo of SCANALYZERSCANALYZER 4 days, 19 hours ago

    CONTEXT

    “Army-Navy Screen Magazine: Hitler Youth Movement & German Manned Torpedo Weapon Army Navy Screen Magazine”

    From 1945, an edition of “Army-Navy Screen Magazine” featuring William L. Shirer, who reported from Berlin in the 1930s, narrating captured German film of the Hitler Youth. Plus film of the Nazi navy’s human-guided torpedo.

  • John Walker posted an update in the group Group logo of SCANALYZERSCANALYZER 4 days, 20 hours ago

    THE HAPPENING WORLD

    “EASA Suspends Pakistan International Airlines Authorization”

    The European Union Aviation Safety Agency brings down the hammer on Pakistan International Airlines, revoking its authority to operate in European airspace on 24 hour notice, for a period of six months. Cited in the order is evidence Pakistan has been issuing airline pilot licenses fraudulently.

  • Damocles posted an update in the group Group logo of SCANALYZERSCANALYZER 5 days, 3 hours ago

    THE HAPPENING WORLD

  • John Walker posted an update in the group Group logo of SCANALYZERSCANALYZER 5 days, 13 hours ago

    TRACKING WITH CLOSEUPS

    “Which Shape Cuts Best? (Weed Eater Line at 100,000 Frames per Second)”

  • John Walker posted an update in the group Group logo of SCANALYZERSCANALYZER 5 days, 20 hours ago

    THE HAPPENING WORLD

    “Travel Tips in a New Reality! – Mentour Pilot Travels through Europe”

    And you thought air travel couldn’t get any worse? Hold my tepid bottled water.

  • John Walker posted an update in the group Group logo of SCANALYZERSCANALYZER 5 days, 21 hours ago

    THE HAPPENING WORLD

    “Fingerprint Lock That Forgot The Fundamentals — DatoHome L-B400”

  • John Walker posted an update in the group Group logo of SCANALYZERSCANALYZER 6 days, 14 hours ago

    CONTEXT

    “Making an Edison Effect Lamp”

    Reproducing a 19th century Edison effect diode. Includes glassblowing, fabrication of electrodes and filament, air evacuation, and vacuum testing.

  • John Walker posted an update in the group Group logo of SCANALYZERSCANALYZER 6 days, 22 hours ago

    CONTINUITY

    “HP 8082A Pulse Generator Repair Part 3: Ersatz ECL Fabrication and Pulser Repair”

    With the replacement ECL inverter designed, it’s time to fabricate the microwave-frequency circuit and see if it works. This completes repair of this instrument. You may ask, “Why not use a modern ECL inverter integrated circuit?” The reason is that H-P’s custom ICs used different logic and power supply levels, and fabricating power supplies and logic level converter circuitry would have been just as complicated as building a compati…[Read more]

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