interestingasfuck interestingasfuck A NASA ion engine while under test at the Glenn Research Center. It can propel spacecrafts to speeds of up to 320,000 km per hour
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    PflaumeKordel
    3 months ago 100%

    This speed is the Specific Impulse which is a measure of how effective the fuel mass is used. It is equivalent to the effective exhaust velocity, which is basically the mean exhaust velocity as the real exhaust velocity depends on the position in the exhaust. The specific impulse is more often given in seconds like in the Wikipedia page for the thruster and this representation is connected to the speed-based representation by dividing the effective exhaust velocity by the standard gravitational acceleration at sea level. Mass is not present in both of these representations because this way they are the impulse per unit mass of propellant.

    Electric thrusters reach very high exhaust velocities, but the fuel mass flow is limited which leads to low thrust. Chemical engines reach high thrust, but their exhaust velocities are quite low in comparison.

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  • metal Metal How to find more of this black metal with dungeon synth melodies?
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    PflaumeKordel
    4 months ago 100%

    Stormkeep became one of my favourite bands really fast for both of those reasons.

    Yes, it is not exactly the same vibe, but for me it is still close enough to recommend them in the same breath.

    Have fun!

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  • metal Metal How to find more of this black metal with dungeon synth melodies?
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    metal Metal How to find more of this black metal with dungeon synth melodies?
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    PflaumeKordel
    4 months ago 100%

    Check out Stormkeep. Their first EP Galdrum and their album Tales of Othertime have beautiful dungeon synth parts.

    Genre-wise I would say you find something like this in the Atmospheric and Melodic Black Metal area, but both does not inherently mean that it is dungeon-synthy, sadly.

    To throw a few names out there that might fit:

    • Stormruler: More towards Melodic BM, but it scratched the Stormkeep itch for me after some time.
    • Ungfell: One of my favourite swiss bands, more medieval/folky sounds, worked for me.
    • Ateiggär: Similar to Ungfell, yet still different.
    • Ophanim: Even more atmospheric.
    • Summoning: One of the first bands with this sound, check out Long Lost Where No Pathway Goes.
    • Emyn Muil: Very Summoning-inspired.
    • Arx Atrata: Also very atmospheric.

    I might remember more in the future, if I do, I'll update this comment.

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  • noncredibledefense NonCredibleDefense The space armament treaty says: no nuclear, biological or laser weapons in space. but kinetics...
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    PflaumeKordel
    10 months ago 100%

    In The Expanse the group responsible for the attack stole the most advanced stealth coating in the Expanse universe to paint the asteroids, leaving Earth unable to detect them with anything but their most powerful sensors.

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  • metal Metal Be'lakor - Of Breath and Bone - Full Album (2012)
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    PflaumeKordel
    11 months ago 100%

    I love this album! Be'lakor played at Wacken last year and I saw them for the first time live, I definitely recommend that.

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  • technology Technology Scientists are hoping to redefine the second – here's why
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    PflaumeKordel
    11 months ago 100%

    The kilogram is defined as the mass equivalent of a photon of a specific energy via the Planck constant h thus linking the speed of light and the frequency of the hyperfine level of caesium-133. The relative uncertainty of the measured value of the gravitational constant G is 10^-5 which would lead to a definition of the kilogram that has a worse relative uncertainty than using the former definition defined via an international prototype. The Wikipedka article is more detailed than this short summary.

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  • ich_iel
    ich_iel PflaumeKordel 12 months ago 88%
    ich🔭iel
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    ich_iel
    ich_iel PflaumeKordel 12 months ago 85%
    ich🛰️iel
    67
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    memes Memes It's always a dissappointment, but you do it anyway
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    PflaumeKordel
    12 months ago 100%

    And if you hold, it scrolls faster, so you do not even have to pause too close to the frame.

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    Black Metal PflaumeKordel 1 year ago 100%
    Sumerian Tombs - Sumerian Tombs (2022) [Full Album] youtu.be

    Black Metal from Germany

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    "Initials" by "Florian Körner", licensed under "CC0 1.0". / Remix of the original. - Created with dicebear.comInitialsFlorian Körnerhttps://github.com/dicebear/dicebearBL
    Black Metal PflaumeKordel 1 year ago 100%
    Stormkeep - Tales of Othertime youtu.be

    Melodic Black Metal from the USA

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    metal metal Ethereal Shroud - Trisagion
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    PflaumeKordel
    1 year ago 100%

    It's one of my favourite atmospheric black metal album and the cover is beautiful. Gotta get it on vinyl at some point.

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  • eurographicnovels European Graphic Novels+ "People, people... can we please settle down and gaze upon the portrait-maker!?" (Astérix)
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    PflaumeKordel
    1 year ago 100%

    I recently visited my parents again and had to stop to check out the old Asterix collection. I should get one on my own.

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  • astronomy Astronomy GitHub - open-space-collective/open-space-toolkit: Collection of versatile software libraries for space engineering applications.
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    PflaumeKordel
    1 year ago 100%

    Is any documentation available? I only found the C++ documentation, but no Python documentatikn so far. Nothing linked on PyPI either.

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  • ich_iel ich_iel ich🙏iel
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    PflaumeKordel
    1 year ago 100%

    Arche Internetz ist eine Detonation aus der Vergangenheit. Von denen habe ich zehn Jahre oder so nix mehr gehört. Toll, dass es die noch gibt.

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  • astronomie Astronomie Missing Link: Don’t look up – ist der Satellitenmarkt noch einzufangen?
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    PflaumeKordel
    1 year ago 100%

    Die neue 5-Jahres-Deorbit-Vorgabe der FCC vom September 2022 ist schonmal ein Schritt in die richtige Richtung, auf Dauer wird es bei solchen Megakonstellationen vermutlich nicht ausreichend sein.

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  • ich_iel ich_iel ich🛣️iel
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    PflaumeKordel
    1 year ago 100%

    Ah, durch ein Meme erfahre ich jetzt, warum ich fast durchgehend auf der A24 so schnell fahren kann wie man will. Auch nicht schlecht.

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  • de_edv de_EDV *Permanently Deleted*
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    ich_iel ich_iel ich🎸iel
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    PflaumeKordel
    1 year ago 100%

    Beim Rindfleisch machen mit einem Hai gibt es für mich nichts wichtigeres als eine glatte Nut und deshalb schwöre ich auf die Kine'O Ukule.

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