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Archived threads in /sci/ - Science & Math - 1976. page

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Is this real or CGI ? We've been debating with a friend and the movement when it starts bouncing looks really odd.

https://www.youtube.com/watch?v=779fMc8ubOo&feature=youtu.be
6 posts and 1 images submitted.
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>>7788293
Ask your mom to jump on a trampoline to find out
>>
>>7788293
you honestly can't tell that it's real?
>>
>>7788330
I honestly can't

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What do you think of Alchemy?
30 posts and 4 images submitted.
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It was debunked many hundred years ago.
>>
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>The four elements
>They list five
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>>7788280
I had this theory when i was in high school that if we can find a way to insert and remove protons from an atom we can just produce gold from shit like copper. Turns out when i grew older and learnt more shit things weren't that simple

I want to study basic human/animal biology. How should I get started? What are the best places to learn? What qualifies you to answer this question?
13 posts and 4 images submitted.
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>>7788279
ur gona hav 2b mor specific.

read textbooks
read journal articles
watch videos
pick a niche

i hav a degre in microbiology with a focus on immunology
>>
>>7788279
http://connect.customer.mheducation.com/products/connect-for-brooker-biology-3e/

start with that
>>
1.) buy the campbell (that big bio book with the frog on its cover, you know) and an atlas of (systematic) human anatomy
2.) read both on your comfy couch
3.) i have 6 peer reviewed pubmed papers in biomed

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hey, /sci/, i have a question about the otto cycle (applied thermodynamics exam soon). If it is symplified like pic related, is the work done by any single transformation int(pdv) or -int(vdp)? The total work in both cases is equal (same area on p-v diagram). I know that -vdp is for flows through an open system, and a typical cylinder IS an open system, but at the same time there is moving boundary work and you can't realy use a control volume. Help pls
5 posts and 1 images submitted.
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>>7788196
pls respond
>>
>>7788274
an ideal otto cycle, is asummed to be a closed system, because the energy transfer happens in a fixed mass or control mass. then, by the enthalpy definition, dh=du + pdv + vdp, but the latter terms become zero, because is a closed system. given this, using first law, and having in mind that the expansion and compression are adiabatical processes (q=0), then the work is defined by means of the internal energy changes. hope this helps.
>>
>>7788378
I always thought this was called the Carnot cycle, but yes this anon is right. Also, the entropy for the system will be 0, which I'm sure you'll learn soon.

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>tfw spend hours to wrap my head around a concept from different sources
>I could teach it to myself in 1/10th of the time
5 posts and 1 images submitted.
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>>7788159
>Can't understand when it is being dumbed down so that even a retard 5 year old could get it.
>Thinks he could do it on his own without any hand holding

Oh man, brainlets. Am I right?
>>
>>7788170

what
>>
>>7788170

oh I understand now what you mean.


no I mean if I could go back in time I could teach it my past self in 1/10th of the time after I studied it

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Why does pain stop us from doing things?
Why is it a *must* that we survive? What is the final purpose of reproduction?
49 posts and 5 images submitted.
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pain indicates that body is recieving damage, and as a survival defense mechanism it pushes you away from the thing that hurts you.
>>
>>7788135
Pain is pleasure
>>
>>7788135
>Why is it a *must* that we survive?
It's not. In fact one day you will stop doing it.

>What is the final purpose of reproduction?
Nature doesn't have purposes. It doesn't have a mind.

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how come force moves things?
12 posts and 1 images submitted.
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>>7788095
The midichlorians from a system interact with the midichlorians of another one, indicating them how to react.
>>
Because force is an acceleration which is a change in momentum. Changing the momentum of something usualy tends to move it in space.
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>>7788111
so... newtons F=ma is actually F=a?

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Any medical students here? Any premeds? How's life as a medical student? Share your story if you were ever interested in getting into medicine.
16 posts and 2 images submitted.
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>>7788091
Pre-med is basically a bio major. The physics and math in pre-med is so simple that it's only half of what A-level covers
>>
>>7788101
How difficult is a bachelors in engineering really? I'm hoping to get into med school but I don't want to be completey unemployable should I get rejected.
>>
>>7788106
Just no life the Pre-med you should be fine, don't drink, don't party until you get into the safety net, which is med school

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Retard code monkey here.
I'm trying to find out how to create an algebraic function which would input the number of items a search query returned, and output the number of pages, given that X items per page are allowed. How do I do this?

I know how to do that using set builder notation, but this isn't what I need in this practical world.
3 posts and 1 images submitted.
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ceil(number of items/X)
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>>7788053

num_pg = 1 + ((items - 1) / X);

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What is the general way of finding the integers of this type?
Thanks
10 posts and 2 images submitted.
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>>7788043
>integers
fuck me, meant integrals
>>
https://en.wikipedia.org/wiki/Partial_fraction_decomposition
>>
Pleas learn \latex

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How is it that it's 2016 and we still don't have a definitive answer as to what happens after we die?
11 posts and 1 images submitted.
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you die. nothing else happens
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But we do know what happens: your body decomposes and the molecules that made you are now being used in other things. Oh you mean what happens to "your consciousness"? Turns out it's just an emerging phenomena that happens when enough neurons connect in a certain way that allows for massive parallel processing of information and this process is allowed to run for several million years of iterations.
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>>7788007
>>7788017
>>7788018
Precisely, the problem isn't that we "don't know" the problem is that too many people disagree for stupid reasons.

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What happens??
8 posts and 1 images submitted.
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>>7788006
I1=I2=0
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Either
a) The middle of the write has the lowest potential
b) Particle collisions
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>>7788006
Depends on how the impedances are matched. Probably waves happen

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Can any psychologists explain this to me?

It seems as if what is and isn't a mental illness changes all the time in accordance to popular opinion. For example, in the 60s being homosexual was a mental illness, but now it isn't. Why is feeling sad a mental illness but wanting to change gender isn't? Or wanting to have sex with children and wanting to have sex with other men. This makes psychology feel very disingenuous as a science.
33 posts and 2 images submitted.
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>>7787854
Xenoestrogens, increased amount in ecosystem, increased amount in our food, increased amount in our bodies and a long duration of them being used.
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>>7787854
>Why is feeling sad a mental illness but wanting to change gender isn't?

But it is:
>https://en.wikipedia.org/wiki/Gender_dysphoria
>GID is classified as a medical disorder by the ICD-10 CM[7] and DSM-5 (called gender dysphoria).[8]
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>>7787866

So why are transgender people supported and not put on medication?

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Amsart or article? Which do you prefer?
3 posts and 1 images submitted.
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>>7787851
Amsart.
Is this even a question?
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>>7787851
>Amsart
>KKKHHHHHAAAAANNNNN!
/thread

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If mathematicians are so smart, why do they believe in god? A rigorous scientific education should expunge the belief in fantastical deities, not strengthen it.
16 posts and 1 images submitted.
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Pretty sure there are atheist mathematicians out there.
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>>7787836
only very dumb people believe in god blindly.
only smart people realize deep inside that god in fact exists.
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>>7787841
This basically. There are blind people throughout most religions and non-religions. Intellectuals believe that God exists from a philosophical viewpoint. The mindless ones follow it due to socialization and see it as an answer to all of the questions they're too lazy to reason through themselves.

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