Threads by latest replies - Page 3568

(6 replies)
No.13345989 ViewReplyOriginalReport
We should blast all waste into atomic plasma and then rebuild it into useful substances.
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(54 replies)
No.13340924 ViewReplyOriginalReport
Does anyone else here fantasize about having a secret underground lab complex?
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(46 replies)

/sci/ence literally can't explain this

No.13337293 ViewReplyOriginalReport
>heat/coldness
Saudi is hotter than France and Romania, and yet bigger than the former and smaller than the latter.
>humidity
South Asia and Southeast Asia are dicklets, Africa are hung.
>black vs nonblack
Chad, Nigeria, Angola, etc. are smaller than HUNGary
>female promiscuity vs monogamy
Sudan is Islamic and females don't sleep around. Even the separate South Sudan is Christian and conservative.
>it's inverse of IQ bro
India has around the same average IQ as Colombia and Ecuador..
>it's just random bro
With everything I said, there are still patterns in the map. Afros = indio > white > brown > asian (non west)
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(7 replies)

/sci/ discord

No.13346760 ViewReplyOriginalReport
a power abusive mod banned me on the discord, my username is quivy
someone (tacky) plz rectify this :D
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(5 replies)
No.13346170 ViewReplyOriginalReport
is there anything easier/shorter than right angle similarity when putting 3d coordinates on 2d screen? more basic than vector math maybe
(8 replies)

How to never be wrong about anything

No.13346019 ViewReplyOriginalReport
Stop thinking, stop guessing, stop having opinions. Just perform observations or conduct experiments or check sources for people who have done so. Dont forget to explain what your sources are or as they say nowdays "put a link". This way knowledge comes directly from nature or from others who witnesses nature, and if they lied it cant be pinned on you, just on your sources.
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(5 replies)

How to get vector orientation from dihedral angles

No.13346851 ViewReplyOriginalReport
Hi /sci/, I'm stuck on a geometry problem I was hoping you could help me with. Pic related is cellobiose. Basically, I want an analytical expression that gives me the orientation of the right hand vector (in blue, between carbons 4 and 1) as a function of the two dihedral angles phi and psi, shown in red and green, and the left hand vector in blue (can assume something simple for this like (1, 0, 0)).

The structure is rigid, and I have access to any of the lengths and angles within each sugar monomer. At first I was thinking to simply try and relate the vectors O-1 and 4-3 (tails of the dihedrals). I'm shit at this geometry/rotation matrices stuff (chemist by training) and hoped to at least get some pointers (i.e. WHAT maths to use for this).

For context, I want to write a program that can quickly calculate how curved a long sugar polymer (many units) is as a function of its average dihedral angles. This lets me calculate its 'static' persistence length so that I can see how dynamically flexible it is over the course of a simulation. This means I can avoid overestimating a given chain's flexibility if its minimum energy structure is already quite curved.
(5 replies)
No.13346843 ViewReplyOriginalReport
any software that can, help me create 3d projection out of 2d sprites just by drag and drop?

basically making sprites into 3d world space thru careful manipulation of its xy position and z layering, into an actual XYZ space?
forming 3d coordinates from 2d screen positions?
(5 replies)
No.13346755 ViewReplyOriginalReport
uteruse (something trannies will never have lole)
(107 replies)
No.13335741 ViewReplyLast 50OriginalReport
>b-but muh booster shots every X months!
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