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(27 replies)

What happened if you pull a body out of cryo??

No.14344707 ViewReplyOriginalReport
Been trying to find pictures or info on it. Can't find shit.
What happens to organic matter after it is frozen to super low temps for long periods than brought back out?
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(5 replies)
No.14346555 ViewReplyOriginalReport
Hi /sci/. Someone linked a long time ago a mathematics torrent that went from A - Z on math. I think it went to the end of high level algebra starting from addition. Does anyone have a copy? Want to teach my niece because it was a great collection.
(18 replies)

how could the Gemara Sages know this?

No.14342014 ViewReplyOriginalReport
The Gemara was written more than 1500 years ago, yet it says the exact lunar renewal cycle duration with one milisecond more than Berlin university's measure of 29.530589, which in itself is one milisecond more than NASA's measure of 29.530588 calendar days (old measure, they updated it or are rounding their measure https://eclipse.gsfc.nasa.gov/SEhelp/moonorbit.html )

Video explaining the Gemara passage
https://youtu.be/HvQ25hj0Zzc?t=120

https://www.sefaria.org/Rosh_Hashanah.25a.10?ven=William_Davidson_Edition_-_English&vhe=William_Davidson_Edition_-_Vocalized_Aramaic&lang=en&with=all&lang2=en

>However, Rabban Gamliel said to them: This is the tradition that I received from the house of my father’s father: The monthly cycle of the renewal of the moon takes no less than twenty-nine and a half days, plus two-thirds of an hour, plus seventy-three of the 1,080 subsections of an hour.

29.5 days (meaning calendar days, each 24 hours) and 2 thirds of an hour plus 73 parts of the 1,080 subsections of an hour (in ancient times people divided hours in 1,080 instead of 60 parts, but the days had the same duration) equals 29.5 days and 793 parts of an hour (which is 793/1080 in percentage). This is equal to 29.5 plus 0.03059 calendar days (you need to divide the percentage by 24 hours, the duration of the day).

All in all this means the writers of Gemara, 1500+ years ago, knew the precise length of lunar renewal is 29.530590 days.
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(5 replies)
No.14346463 ViewReplyOriginalReport
I always disliked math in school, struggled with it more than other subjects, on the SAT it was my worst area. I assumed I was bad at it.
Looking back I wonder if I actually had a chance of doing better but was set up for failure by a lack of good teachers. I always thought I had a better inherent ability for reading/writing subjects - English was always my best - but thinking about it I got a ton of early help from my parents with that stuff, reading to me a lot and encouraging me to read and write from an early age, and nothing from them in math. How much of math ability should shine through regardless of the quality of teaching? Nature versus nurture basically.
(8 replies)

What's the fastest way to learn Group Theory?

No.14345216 ViewReplyOriginalReport
I don't need to learn it in-depth I just need to learn:
>Definitions and Basic Properties
>Subgroups and Cosets
>Homomorphisms and Normal Subgroups
>Group Action
Time limit: 11 days. What's the fastest way to go about it? Thanks.
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(26 replies)
No.14339235 ViewReplyOriginalReport
I fell for the biochemistry major meme and it's too late to turn back.
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(11 replies)

Should I go for a PhD in computer security?

No.14346266 ViewReplyOriginalReport
Hello there /sci/, I need your help.
I am working as a security engineer in the Benelux, super chill and comfy job, relatively well payed.
However I'm 25 and I feel like that I could aspire at more if I had a PhD.
Therefore I've looked around and found a very good PhD offer in The Netherlands, and I was thinking about submitting my application.
What do you think about it?
I suppose that the PhD position will pay me less and I will have to move to a more expensive area, plus I have now quite some certifications in security, which I would not get (more) if I was there.
On the other had it is truly now or never, even because with promotions and everything it simply would be unfeasible to go back to a PhD salary.
So the question comes down if you think that now, at this time of my life a PhD at very good university in computer security could be a good investment.
Thanks.

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(45 replies)

Explain This Scientifically

No.14339960 ViewReplyOriginalReport
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(5 replies)

Living without time

No.14346127 ViewReplyOriginalReport
Morning /sci, have any of you tried living without time for extended periods of, well, time? I mean covering up your phone's clock, computer etc and isolating yourself from any means of seeing the time. If you ever get a week or so with no responsibilities I highly recommend trying, allows much higher focus on learning stuff and reduces stress in my experience.
(679 replies)

/sfg/ - Spaceflight General

No.14343662 ViewReplyLast 50OriginalReport
Blorigin radio silence edition

Previous: >>14338043
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