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/sci/ - Science & Math

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3259659 No.3259659 [Reply] [Original]

This is the stupidest person I know.

Why are people so stupid, /sci/?

Why?

>> No.3259664

Well she is right, in a since. An orbit can technically go on forever, and it is in motion. Of course it doesn't conflict with the laws of thermodynamics either because it does no work and there's no friction.

>> No.3259665

"The tides go in, the tides go out, ..."

>> No.3259667

Most of them don't care enough about being smart ... and that's ok .. their life .. I don't care

To me problem is their ego

>> No.3259670

Perpetual motion is a badly chosen word in the first place, how can you expect some random moron off the street to know what it means?

>> No.3259672
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3259672

>>3259664
>Well she is right, in a since
>in a since
>since

>> No.3259675

>>3259664

actually there is friction, its just pretty negligible. Practically, the motion is perpetual, but technically its not.

>> No.3259677

I'm sure you all really want to rage at this, but it sounds to me like the professor just didn't do a good job of explaining why perpetual motion that does work is impossible.

>> No.3259680

>>3259664

>Implying gravity will last forever

>> No.3259681

>An orbit can technically go on forever
>it does no work and there's no friction

it cant, gravity waves act like friction.

>> No.3259683

>>3259677

Is that really something to waste time on in a university physics lecture? I didn't take physics so I wouldn't know, but I would have been surprised if a maths lecturer wasted a lecture on BEDMAS.

>> No.3259687

>>3259675
Wait, gravity causes friction? this is news to me

In a hypothetical scenario in which there are two completely stable objects that will never degrade orbiting each other in a perfect orbit, would they eventually slow to a stop? Where would the heat of the friction be generated?

>> No.3259688

>>3259675
>>3259680
>>3259681

It's beyond the point. It's a kind of perpetual motion you can get arbitrarily close to with an ideal system (that doesn't necessarily involve gravity), because it does not violate the laws of TD.

>> No.3259693

>>3259683
This person was obviously speaking to the professor outside of class.
In fact, it seems that they weren't even in a class with said prof.

>> No.3259695

>>3259687
I never said gravity has friction, I was only pointing out that space is not in fact a perfect vacuum, (there's a small amount of dust and hydrogen gas and stuff) so you can't completely rule out friction. It's fucking minuscule compared to the momentum of the planets, but its there.

>> No.3259700

Even the orbits slow down. None of the orbits are truly circular so they exert tidal forces on the central body. The tidal forces dissipate the energy of the system as heat into the respective bodies. It just occurs on very long time scales.

Perpetual motion is a bad term though. The general public seems to confuse it with infinite intertia. It's possible to construct a decent approximation of perpetual motion. In fact, a flywheel is a perfect example of such a system. Massive flywheels are often used to handle peak power demands. They spin them up and they just spin for a long time until the power grid hits a spike and then they dump the kinetic energy into the grid.

>> No.3259702

I hate it when people are condescending to you when you try to use science. I had a discussion with some of my mates about the nature of free will and why I think it doesn't exist. When I pointed out some interesting facts that I used to come to my conclusion they started acting like I wasn't making sense. I asked them if what I was saying was rubbish and they said it was, why? It was rubbish because they bible says god gave man free will so all my critical thinking was bullshit. To each their own, but I hate how they make me feel stupid for looking at things scientifically or logically.

Also OP's picture pisses me off. I'm an undergrad and Ive started taking my science courses (University physics 2, Calculus 2 and chemistry.). In my Physics 1 class you won't believe how many people argue with the lecturer or want to prove the lecturer wrong. Not only does it make the person look silly and spoils the atmosphere of the lecture, it also derails the topic and wastes time.

>> No.3259703

>>3259687
yes, its most notable with orbital black holes, but everything emits gravity waves:
-Two objects orbiting each other in a quasi-Keplerian planar orbit
-A spinning non-axisymmetric planetoid

the energy is carried by the gravity wave, the earth sun system only loses about 200W so its a very small amount

http://en.wikipedia.org/wiki/Gravitational_wave

>> No.3259706

>>3259693

Oh. Then that fucking undergrad can fuck off and stop wasting the professor's time. You have no idea how frustrating it is to be waiting with something important while some first year is complaining about how they don't understand the course, rather than just reading the fucking textbook.

>> No.3259710

>>3259702
wait, why doesn't the spoiler tag work? this should be hidden

>> No.3259712

>>3259702
I technically did that.
But it was much more of questions regarding accuracy of the math we were doing.

>> No.3259713

>>3259710
we dont sensor our self on sci

>> No.3259714

>>3259710

sci doesn't use spoiler tags, only Imath] tags

>> No.3259717

>>3259706
Yeah I do.
My Physics prof was talking to some Christfag chick from his Astronomy class while I was trying to get help on some relativistic momentum problem.
And by "talking to", I mean "cornered by". She was trying to disprove him on the whole 14 billion years thing.

>> No.3259719

>>3259714

<span class="math"> \frac{so we can do cool math stuff}{like this} [/spoiler]

>> No.3259720

If that's the stupidest person you know, all I can say is you've been damn lucky.

>> No.3259722

>>3259706

People take courses because they want more than just a textbook, you fucking miserable cretin.

>> No.3259723

>>3259710

Spoilers only work on a few boards, newfriend.

>> No.3259724

>>3259712
Why would you need to point that out? I mean, we're there to do physics and not algebra. If the lecturer fudges up on some number crunching I don't think its enough to halt the class unless it effects the physics side of it. For example, stopping the lecturer to say that he got the wrong answer because he used 50kg instead of 5kg is a bit pointless in the long run.

>> No.3259726

>>3259722

If you still can't understand it after reading the textbook, your notes, wikipedia, consulting with your classmates and your tutor, THEN you can ask the lecturer.

>> No.3259734

>>Why are people so stupid, /sci/?

I think it's because they don't self guess. To be honest it's a western cultural thing, where it is seen as more attractive to "stick to your guns" than it is to be right... or to be wrong and learn why.

I agree this person is stupid because even if he didn't know better, even if he knew absolutely nothing about forces, energy, etc.. , if he simply had the common sense to question himself this wouldn't have happened.
All he knows about the planets, sun, moon, etc.. is that they have been moving that way for a very long time... That's it... A stupid person who doesn't question their own thoughts might shout out that this implies perpetual motion.. But I sometimes think even those "stupid" people COULD come to their senses if they just had a mental self check...
Sadly, it seems sooooo many people just do not have it.

>> No.3259735

>>3259724
Not what I meant, bro.
When you take Gen Physics, you look into things to a certain accuracy and depth.
Then you get into your junior and senior level courses, and they get a little deeper and a little more accurate.
Then as a graduate student, you go as deep as you can and the math is as accurate as it can get.
I merely asked about this shit that we would learn in the junior level classes. And I wouldn't ask it until the end of class anyways.

>> No.3259738

I don't mind people asking questions that seem stupid to me when they are legitimately ignorant. I just hate it when students ask questions they already know the answer to and want to stroke their ego in class.

>> No.3259741

>>3259726
why not just skip five steps and get it directly from an expert, who can figure out exactly what you're not getting and help you out that way?

this is WHY professor office hours exist - so people can ask questions without having to bother people in class.

yet you're still butthurt about it. holy fuck how retarded are you?

>> No.3259742

>>3259735
I like to call it "showing interest".

>> No.3259755

Lol, I automatically assumed it was a girl. Didn't even think about it until I read a post referring to him as a he. OP is the person in your picture a guy or gal?

>> No.3259766
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3259766

>>3259659
the term "Perpetural Motion" actually relates to a hypothetical machine that produces more work than it consumes, reguardless to if it is indefinitely or not.

Planetary Orbit isn't a machine, it's a system operating in the vaccum of space.

Those two statements because even the motion of objects orbiting in an empty vacuum still radiate away their energy in the form of gravitational waves. It's just that it will take a LONG time for those orbits to degrade.

This person was talking on Facebook. I have a simlar friend who proceeds to write the most nonsensical (for lack of a better word) bullshit, that i'm always at a lost for words (pic fucking related)

He's a nice enough guy, but here is the thing about people. There are those that have a desire to be smart, and those who desire to be precieved as smart. Both of these people are the fucking latter.

>> No.3259771

>>3259741

For the same reason that when you're hungry you must first check your fridge, then check if you have enough money to buy food at the supermarket and only then consider going to the foodbank. Socially responsible usage of a common resource. There is one professor for the entire class. If you don't NEED his help, leave him free for somebody that does.

How fucking retarded are you? Are you one of those ingrates that dumps his household refuse into public wastebins?

>> No.3259774
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3259774

>>3259766
oops meant to say "those two statements aside."

my mistake.

>> No.3259792

>>3259738
2 words....

Fuckin' Gunners.

>> No.3259797

>>3259664
Nope, gravity drags it down, therefore acting like friction in the sense that it will eventually slow said orbit to the point where the object in orbit will fall into the object it is orbiting.

>> No.3259814

>>3259755
"KenLee Otf Blanchard"

Not a smart guy, but a friend of my Dad's.

>> No.3259864
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3259864

>>3259755
I did too. Intredasting.

>> No.3259873

>>3259755
>>3259864

It's called "being a sexist moron". Not so much interesting as sad, really.

>> No.3259882

>>3259667

I hate this kind of thinking. The kind of ignorant 'in vacuo' paradigm.

These people exist on the same planet as you, and perhaps even the same country.

They have a right to vote, and influence people's choices.

Everyone affects everyone. Admittedly, some have a more negligible impact, but an impact nonetheless.

/yeah, I kinda angry...

>> No.3259904

>>3259873
It's not that, i'm pretty much the anti-sexist. The thing is, most of the reeaally idiotic posts on facebook are from girls (note girls, not women), especially those posted on here. It was a reflex. But sure, guys have a tendency to say retard stuff as well.

>> No.3259912
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3259912

>>3259904

>he's too pussy to admit guys have a higher average IQ

>> No.3259917

>>3259912
Nothing to do with IQ.

>> No.3259923
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3259923

>>3259917

>say retard stuff as well
>say retard stuff as
>say retard stuff
>say retard
>retard
>Nothing to do with IQ.

>> No.3259935

>>3259882

You take knowledge as absolute .. Either you have knowledge on all subjects or you lack knowledge on all subjects..I'm talking about scientific knowledge, and you assume that lack of that must impact other areas of life..I don't

We have division of work, and most of us are capable on functioning in our own branch.No matter how smart you think you are there are situations that would make you piss you self in shame.If you ask basics of reasoning and philosophy would be a mustknow in my ideal world , not scientific stuff..Most of us learned critical reasoning through science , but it is not reserved just to epistemology.But I understand and partially agree with you, though I was just being pragmatic and learned long time ago that there would always be stupid people.I live in a country that basically has free education and we still have shitload of morons.They prefer ignorance.... eventually you learn to live with that.

>> No.3259957

>>3259923
Things can be retarded in different ways. Being bad at using logic and solving problems has to do with IQ. Expressing your thoughts at all costs without enough foothold is just.. retarded. (EQ maybe, i don't know, never studied the human mind) Also, knowing something somebody else told you isn't being smart. That's just remembering.

>> No.3259963
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3259963

>>3259957

>> No.3259980

http://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect

Once you know a little, you think you know everything.

Therefore, the professor clearly doesn't know what he's talking about.

This explains all those flagrantly stupid people you run across who will tell you straight faced that people only use 10% of their brains.

They're not actually that stupid. They have just learned a little, and suddenly believe themselves to be experts.

Whereas people that have taken the time to learn a LOT, don't usually tend to go waving their knowledge-dicks around, because they have that sneaking suspicion they may be wrong.

>> No.3259981
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3259981

>>3259912
Sadly for your reaction image, men have a lower average intelligence. We have more statistical outliers, more geniuses, more retards, in the end, we have more retards than geniuses, so we get pulled down below the average IQ of women.

>> No.3259992

>>3259981

21st century and you faggots still talk about abstract bullshit like IQ ? ohwow

>> No.3260012

>>3259992
This.

>> No.3260049

Women are such beautiful creatures. I can't wait to find a smart one to massage my penis with her inside.

>> No.3260069

I'm the stupidest person i know.

I can't learn much about maths or physics because i don't pay attention, and no matter how hard i try i can't seem to overcome attention deficiency despite being interested.

I'm sick of failing my subject and looking like an ass compared to my siblings, do you guys have anything you do to benefit you in maths and science?

>> No.3260070

>>3260049
You want her to massage your penis while she's inside it?

My new fetish.

>> No.3260075

>>3259766

>the term "Perpetural Motion" actually relates to a hypothetical machine that produces more work than it consumes, reguardless to if it is indefinitely or not.

N..........no. The term 'perpetual motion' is what you get when you combine the words 'perpetual' and 'motion'. Motion that lasts forever.

>> No.3260094

>>3260075
>every term must be the 100% literal meaning of it's combined words

Autism!

>> No.3260098

>>3260094
..oh and that misplaced apostrophe was a typo from typing too fast but feel free to make a stink about it

>> No.3260103

>>3260094
Not that guy you assume has autism.

Welcome to civilized discussions where we don't talk about scientific stuff in an abstract way.If we talk about perpetual motion then we talk about MOTION THAT IS PERPETUAL.Accordingly we don't talk about machines.We do that to avoid confusion.Is this something you can understand?

>> No.3260110

>>3260094
He is correct. A perpetual motion machine doesn't create more energy than it has, it just runs forever.

Imaginary machines that create more energy than they use are called "over unity".

>> No.3260191
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3260191

>hysterical aspies

OP, instead of complaining about her on here why don't you explain to her the mistake?