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/sci/ - Science & Math

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>> No.12716678 [View]
File: 75 KB, 594x592, IMG_1913.jpg [View same] [iqdb] [saucenao] [google]
12716678

>>12715453
mind giving more details?
>$600M if i am elon with team of super geniuses
$600M dollars to build a throwaway rocket to get a 1lb payload into low earth orbit? how? Falcon 1 was estimate by Elon to have been $90M to develop and that has a 180kg payload that has a possibly resuable first stage. that whole thing seems way overengineered in every aspect when the goal here is "fuck everything i just want to get a rock into low earth orbit". also is the vanguard not a 10lb payload rocket that was built on the order of 10s of millions of dollars in the mid 1950s? is the technology there a mystery? which parts of it are the most expensive? what reason is there for that not to be significantly cheaper today?
>dedicated launch on electron $7.5M
well there would be no logical reason for us to buy a dedicated launch anyway

>>12715681
>MSc Space Systems Engineering with satellite DSP and power systems experience
amazing. i was planning on making another thread in the future with more details if enough people responded here. i really should just make one now tho but i've been trying to figure out how complicated this really is on a scale of TempleOS to Need A Team Of Experienced Engineers And Hundreds Of Millions Of Dollars, and the internet keeps suggesting the latter but i don't see why

>> No.10454657 [View]
File: 75 KB, 594x592, 1549066812550.jpg [View same] [iqdb] [saucenao] [google]
10454657

>(((daylight savings time))) stole another hour, never to return
this just aint right...

>> No.10201267 [View]
File: 75 KB, 594x592, 1544286807475.jpg [View same] [iqdb] [saucenao] [google]
10201267

>global warming
why don't we just make a bunch of big A/C units and use them to cool down the earth?

>> No.9298728 [View]
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9298728

>>9298689
>implying calculus is important

>> No.9277617 [View]
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9277617

I need help giving a combinatorial argument that
[eqn]
\sum_{k = 0}^{N} (-1)^k S(N,k) = (-1)^N
[/eqn]
where [math]S(N,k)[/math] are the stirling numbers of the 2nd kind. I am fairly certain that it uses inclusion-exclusion, but I am not quite sure how.



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