Brainsploosh
@Brainsploosh@lemmy.world
- Comment on A Stunning Fusion Rocket Could Cut Interplanetary Travel in Half—and We'll Try It in Just 2 Years 4 weeks ago:
Still blocked, but thank you
- Comment on A Stunning Fusion Rocket Could Cut Interplanetary Travel in Half—and We'll Try It in Just 2 Years 4 weeks ago:
Article is capped at 18 views/day so can’t see numbers.
But theoretical cap of energy from a would be something like E_kin = (\gamma -1)mc². Witgout knowing anytging about the mission or engine, a 50 kg probe at a velocity of .9 c means an energy requirement of about 1,0e21 J.
Fusion of H2 to H3 yields about 340e9 J/g meaning we need about 300 million kg of fuel at 100% conversion rate, or a third if we manage He3 reaction.
Realistically heating, engine efficiency, deceleration, vibrational damping and such would probably lower efficiency to at most 40% and we end up at 750 million kg of fuel to propel a 50 kg payload.
Seems unfeasible.
- Comment on [deleted] 2 months ago:
Why don’t realtors share their closing prices? Seems like a good marketing tactic - “look how much I can get you for this thing”.
You could also take a look at listing prices for land of different types. Or even just call realtors and say you’re interested in buying something similar to yours and ask what the range is for them.
You could probably also buy this data from a data broker for cheap.
- Comment on [deleted] 2 months ago:
Check sales listings for any sold property at that price?
- Comment on Fuck geometry 4 months ago:
They’re about as imaginary as numbers are in general.
Complex numbers have real application in harmonics like electronics, acoustics, structural dynamics, damping, regulating systems, optronics, lasers, interferometry, etc.
In all the above it’s used to express relative phase, depending on your need for precision you can see it as a time component. And time is definitely a direction.
- Comment on Jesus Christ 5 months ago:
In English yes, but not in closer languages like Aramaic, Hebrew (יְהוֹשֻׁעַ (Yehoshua)) or Greek (ἰησοῦς (ioesous)).
Source (a little long but interesting read)
- Comment on Jesus Christ 5 months ago:
Should it more accurately be Yesus?
- Comment on If reality worked the way hiring managers and job interviews thought it did companies would have to fire everyone when they purchased new software since no one would have any experience using it. 5 months ago:
Apparently privileged men apply when fulfilling 60% of the requirements. Women and minorities 100%.
Maybe that’s why they have the ridiculous reqs?