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Danielle Fong 🔆

@DanielleFong63,421 subscribers

dyson sphere prospector DMs OPEN

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immersive linear algebra The world's first linear algebra book with fully interactive figures. via HN

immersive linear algebra The world's first linear algebra book with fully interactive figures. via HN

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we had a great success (high five!) with commissioning our next iteration on our lightcell energy 🔆 portable dyson sphere heat exchanger / swirl injector (steve upgraded the heat exchange scale) i think what we're seeing here is some of the heat and sodium being regenerated into the input air from the top, swirling down to join the vortex of fuel, injected in the bottom, and then mixing. and secondary flows and combustion occuring in what looks like up to three different regions, with recirculation vortices. cool!! so i made a plate of emergency pasta before we test it again, and start pushing further! and using it to guide our next designs

we had a great success (high five!) with commissioning our next iteration on our lightcell energy 🔆 portable dyson sphere heat exchanger / swirl injector (steve upgraded the heat exchange scale) i think what we're seeing here is some of the heat and sodium being regenerated into the input air from the top, swirling down to join the vortex of fuel, injected in the bottom, and then mixing. and secondary flows and combustion occuring in what looks like up to three different regions, with recirculation vortices. cool!! so i made a plate of emergency pasta before we test it again, and start pushing further! and using it to guide our next designs

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next generation of the orb won't be ready for the party, but printing during it will be pretty cool as well

next generation of the orb won't be ready for the party, but printing during it will be pretty cool as well

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i often describe lightcell energy 🔆 as building portable dyson spheres. harnessing the power of spectrally pure, chemically fueled, man made stars. and it's remarkable that within just a few months of starting experiments, we started achieving brightnesses greater than the sun ever shines on earth. (note, in large part because it is 1/600,000th of our sky -- a limitation that our lightcells, our "dyson spheres" do not have, wrapping around our emitter.) within a few months, in a garden shed in Canada, we achieved over 3 suns, over 300,000 nits (cd/m^2). within a few more months, in our lab in San Francisco, Jon, Steve and I achieved almost 7 suns, 670,000 nits. albeit destructively to the apparatus! at temperatures that eroded our cutting torch, our salt supply, our quartz tubes, or cracked. our sapphire. but this was in 2023! to a large extent, the development over the past couple of years, from mid 2023, to 2024, and all this year, was a steady effort to invent and develop, in some cases for the first time, for any team on earth, a materials stack, and everything relevant to to, to make high temperature parts for (a) continuous operation, and (b) that could tolerate the extreme temperatures and chemical environment necessary to vaporize and condense salt, in a continuous cycle, with no moving parts. we basically continuously tried the stupidest thing that could possibly work. some things, like "use table salt" worked out amazingly well -- though they had knock on requirements, like now you have to reform and condense sodium chloride in heat exchangers other things, we tried all the stupidest things we could think of, until we ran out of stupid things to try. Then we had to start trying clever things. Like, the material that we chose, alumina, which can handle the molten NaCl, and the temperature, and will not further oxidize, since it is already an oxide, is super hard, as in high stiffness. It has finite thermal expansion. You must therefore relieve the thermal expansion via curvature. You can ONLY POSSIBLY survive thermal gradients and cycles through curvature. This will requires you pioneering a field. Roll up your sleeves. It has been an epic journey getting this far! Of course, it is yet unwritten if lightcell energy 🔆 can even complete it, much less by the end of the year, but, i can certainly set a medium term goal: more than 1,000,000 nits (cd/m^2, or ~1kw/m^2). brighter than any firework. maybe achieved by New Years? that will be a hell of a firework, and a beautiful omen. 1000x brighter than HDR, 10x brighter than 1kW/m^2, 10 suns, the max brightness of a Sun, incident on the Earth's surface here's the twist: it would now not be cheating to use recuperation AND oxygen enrichment if you're burning green hydrogen from electrolysis, since you can set up to hold on the oxygen. it's for this reason, and many more that I'm excited to welcome my heroes, Terraform Industries / Casey Handmer to lightcell energy 🔆's SAFE and Cap Table. We're building the Yin to Terraform Industries' Yang of abundant hydrogen and synthetic fuels. We are excited to work on both the technology and the multi megascale to gigascale development sites -- energy campuses, power centers -- to build revolutionary, cost effective proving grounds for synthetic fuels and energy technology. Thank you so much. We are empowered and inspired by your belief and investment in us. We will make it count 🫡 Thank you again, as well, very much, to our many investors who we have not yet tagged, and will tag, on our THANK YOU FOR SUPPORTING US ON SAFES WHILE WE WERE JUST A DREAM post, soon to come. Hope to paint funding announcements in a new, golden light!

Danielle Fong 🔆

278,016 просмотров • 9 месяцев назад

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“it’s a toy” lmao look at this

Danielle Fong 🔆

100,644 просмотров • 1 год назад