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Cake day: June 23rd, 2024

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  • My country’s public TV stopped offering subtitle downloads for shows that can’t be streamed online

    (The transcript was always easily available with second-accurate timing by clicking the ㏄ button next to any subtitled program, whether or not it was available for streaming (usually indefinitely for old ČT production, 14 days for old movies and recent ČT production, never for new movies or shows). One person used this transcript of a documentary on nutria breeding verbatim (no edits except stage instructions and punctuation) to create a somewhat dadaist sci-fi musical featuring intellligent alien beings that happen to be called Nutria. And the frame-accurate, albeit Teletext-restricted (Czech+Slovak+German uppercase/lowercase alphabet only, 38x2, 1 subtitle/s, 7 colors) subtitles were also available by applying a simple Regex to the show page’s URL. Now a unique subtitle URL is generated only when the server and JavaScript + WideVine player complete a handshake.)











  • ChaoticNeutralCzech@feddit.orgtoScience Memes@mander.xyzSpace Cats
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    5 days ago

    Depends on their response to wavelengths at rest, including IR (for blueshift) and UV (for redshift).

    Redshift doesn’t literally mean things appear red: the colors just remap, for example:

    320 nm 🕶️ → 400 nm 🟪
    400 nm 🟪 → 500 nm 🟩
    500 nm 🟩 → 625 nm 🟧
    625 nm 🟧 → 781 nm 💿 (IR, CD laser wavenength)

    For easy calculation, I chose an exactly 25% increase in wavelength, achievable if the cat is receding at 25 % of the speed of light.

    Or vice versa for blueshift. For example, a low-pressure sodium lamp in old street lights is near-monochromatic at 589 nm (pale yellow), which will reach 678nm red at 15% redshift, while a CD infrared laser incoming at the same 0.15𝑐 speed will have the same apparent red light at 678nm but because of blueshift.

    TL;DR

    🏳️‍🌈 ↓ Blueshift

    🏳️‍🌈 ↑ Redshift
    Redshift in absorption lines in starlight