Lisias Posted Sunday at 10:04 AM Share Posted Sunday at 10:04 AM 6 hours ago, AckSed said: First 'proper' pooper? The first space toilet was on Skylab, so the first one would have been one out of Pete Conrad, Joseph P. Kerwin or Paul J. Weitz of SkyLab 2. This probably meant to space-faring what the latrine meant to civilization! "A small fart for a man, a huge..." uh... Never mind. Quote Link to comment Share on other sites More sharing options...
softweir Posted Sunday at 06:35 PM Share Posted Sunday at 06:35 PM 15 hours ago, AckSed said: Apparently, farts ... But surely the Isp of low-mass, low-velocity methane would have been far too low to create any significant dV? Quote Link to comment Share on other sites More sharing options...
StrandedonEarth Posted Sunday at 07:22 PM Share Posted Sunday at 07:22 PM 46 minutes ago, softweir said: But surely the Isp of low-mass, low-velocity methane would have been far too low to create any significant dV? In microgravity, any impulse will cause an acceleration, however small… Quote Link to comment Share on other sites More sharing options...
magnemoe Posted Sunday at 08:50 PM Share Posted Sunday at 08:50 PM 1 hour ago, StrandedonEarth said: In microgravity, any impulse will cause an acceleration, however small… Who is true but I think that moving the legs pressing one the seat would have an far larger effect. You want an decent airflow into an space toilet to do the work of gravity sucking everything in. Quote Link to comment Share on other sites More sharing options...
Lisias Posted Sunday at 08:53 PM Share Posted Sunday at 08:53 PM (edited) 2 hours ago, softweir said: But surely the Isp of low-mass, low-velocity methane would have been far too low to create any significant dV? You, surely, never tasted Brazilian Feijoada. 1 hour ago, StrandedonEarth said: In microgravity, any impulse will cause an acceleration, however small… Jesus Christ... I gogglo'ed this just for the LULz and ended up finding... Something... Quote (PDF) Innovative Solid Rocket Propellant Formulations for Space ... Academia.edu https://www.academia.edu › Innovative_Solid_Rocket_... Innovative Solid Rocket Propellant Formulations for Space Propulsion ... Innovative Solid Rocket Propellant Formulations for Space Propulsion ... sauerkraut · Erni ... (emphasis are mine) ==== EDIT ==== It was a SEO SCAM, I downloaded the damned PDF and there's nothing remotely near that. Edited Sunday at 08:55 PM by Lisias it was a scam Quote Link to comment Share on other sites More sharing options...
darthgently Posted Sunday at 09:10 PM Share Posted Sunday at 09:10 PM 16 minutes ago, Lisias said: It was a SEO SCAM, I downloaded the damned PDF and there's nothing remotely near that Thanks for taking one for the team and the warning! Quote Link to comment Share on other sites More sharing options...
Lisias Posted Tuesday at 01:25 AM Share Posted Tuesday at 01:25 AM (edited) As a matter of fact, I just discovered that nope, we can't detect this hypothetical modulation on Gravitational Waves (of course, if this thing will ever exist). Yet. However, there's a theoretical phenomena called Gravitational Wave Memory and Scientists are going to research if this thingy really exists. TL;DR: when a GW propagates into spacetime, every matter it traverses changes the spacetime a tiny little bit in a way that could allow someone to infer when and where this happened (since the name "Memory"). Such "memory prints" would be extremely small, smaller than an atom, but it may be possible to detect them (if they exist) using an experiment to be launched in 2035, the LISA. If this GWM thingy exists, and can be detected (some speculations suggest that some could be detected using current technology, by the way), then it would be possible to detect modulations on it too. Interesting though. On 12/16/2024 at 4:11 AM, Lisias said: Assuming a Civilization Level III on the Kardashev Scale would like, by reasons beyound our reasoning, transmit a message to the Universe. It's known that Light have a horizon that limits the reach of such message, not to mention the shift to red due the spacetime expansion. Yeah, I'm talking about the limits from the Observable Universe. But since Gravitational Waves are not particles traveling in the spacetime, they are the own spacetime compressing and expanding (waves). So such waves would not have the same limitation of Light, that reaches a point in which the spacetime length it's going to travel "stretches" faster than it's own speed. Gravitational Waves travel on the spacetime itself, so these waves ends up being stretched together the spacetime itself instead of staying behind. So, the best way to transmit a one way message to the rest of the Universe would be by modulating Gravitational Waves (how they would do it it's out of the scope of this thought experiment - they are a Level III and not us for a reason!). Would we, primitive beings stumbling each other on the 3rd rock from the local Star, be able to detect such modulation on Gravitational Waves? More on this video: Spoiler Edited Tuesday at 01:28 AM by Lisias Added links and fixed a phrase. Quote Link to comment Share on other sites More sharing options...
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