Archived threads in /sci/ - Science & Math - 38. page

What is the significance of C-Squared and how does it relate to the energy-mass equivalence?

Why is the total energy of a system equal to its mass + the speed of light squared?

And why does total energy/c squared equal the total mass of a system?

How does light pass through a prism and what slows down it's speed to an outside observer?

Don't you dare say it's scattering or absorption, because, if that's the case, then explain why the light stays in a straight line. No bullshit.

>>9154203
>>9156228
Thank your very much ! Alpha = 60°

Because space agencies have such a hard time just posting real, unedited footage from their cameras.

>>9156667
This is certainly part of it.

They did so much shooping of pictures from space that some people got really suspicious.

However, that alone isn't reason to throw away everything humans learned before we even went into space.

>>9156737

The other reason is, it doesn't matter for us humans, because for 99% of us, this knowledge has no practical relevancy. Even pilots are (supposedly) trained to assume a flat earth because the curvature is this unimportant for them.

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Just a reminder that if our country wasn't full of environmental pussies we would have had a nuclear powered plane by now.

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Even though nuclear is the superior energy source, it gets the least government support. Anybody that hates nuclear power hates humanity and deserves a helicopter ride, just a reminder.

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>>9153443
Just a reminder that humanity could have become a type 1 civilization by now, if we dropped bombs to generate electricity.

engineering>science

>January 23, 2017

>>9163940
GET FUKE.'D

http://www.dailymail.co.uk/sciencetech/article-4872220/Has-China-cracked-Nasa-s-impossible-engine.html

>>9163650
why should it? please explain your thougths

http://www.dailymail.co.uk/sciencetech/article-4872220/Has-China-cracked-Nasa-s-impossible-engine.html

>>9163655
>net force without propellant
>newton compliant
Pick one

>>9163279
You should probably kill yourself OP.

>1. How do we know the climate is changing faster than previous warming cycles if we didnt have reliable ways of recording those temperatures.
the problem with temperature proxy records is increases in variance. that means we might have a hard time pinning any given year down to a single average temperature, but it doesn't mean we can't examine trends. if we see global average temperatures take 100k years to move ten degrees, we dont need to know what every single individual annual measurement was to know that it took a long time
>2. Why is it that every article on google about climate change feels like the author is explaing the concept to pre school children.
because most of them are explaining the topic to an intended audience of people with no training in science whatsoever
>3. How accurate of the current models, and how do we know they are accurate. (Weather forcasters have a hard time predicting the weather a few days in advance where I live. Based on the accuracy of those models, how do we accept the accuracy of climate change models. Or are they entirely different)
the latter. the difference between climate models and weather models is something like the difference between dropping a dart out of an airplane and asking what specific square foot of ground it will hit and which state it might land in. no single model of climate is perfect, either. what scientists do is look at the output of many models each run with different inputs and assumptions about future carbon use and examine what trends the models project

>>9163289
Honestly I thought about it, but that just takes way too much effort.

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Clearly you have forgotten there is no such thing as a good group project.

nCr or nPr ?

>>9163057
idk

The same semester, I had 2 groups. One was so good that all of us got 120/100 on the final product.

The other group.... one guy who was good for the project dropped the class. Two of the people offered to pay us a total of $400 to do the project for them. Me and the last guy did the entire fucking project for $400. We then ratted the two out, getting them academic suspension and making us $200 each and a B on the project.

>>9163030

go to your general practitioner and get a blood test done

seriously you might have inflammation somewhere (not necessarily joints)

>>9163042

Okay, I'll go ask him about it

>>9163030
It could be sugar related. Sugar overexcites the immune system leading to inflammation. This causes an inability for chemical receptors to work efficiently which results in a overproduction of chemicals, leading to tolerance. Try vinegar it's been proven to help breakdown sugar almost as good as diabetic medication. Take it twice a day, about 20ml per dose.

>>9162683
Binge watch Wildberger

https://www.youtube.com/user/njwildberger/videos

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bring a laptop
dont have one? buy a cheap thinkpad

hospitals have wifi usually dont they?

then you can read a book, play stupid browser games, or shitpost on 4chan

>>9162708
They don't allow laptops, last time they bitched about bringing a phone but didn't really matter so im doing it again,
Doesn't have wifi but i can spend like 1gb (in 2 days wut), and about the book, thats exactly what im asking, maybe say some book that you enjoyed?

I'm also extremely interested in genetics, but my own subject takes up so much of my time I literally cannot spend any time studying that/working on a genetics related business.

>>9162674
>physics
>for fucking industry
You're fucked. Rev up that mcjob application.

>>9162679
Don't say that. Physics for academia is a dead end imo. Cba spending my life in a lab, not fully utilizing what I have learned to help create a more productive society and let me enjoy what I work as.

On a side note, I'm also interested in currency trading. How should one connect their physics studies to Forex?

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>https://nypost.com/2017/09/08/viking-skeletons-dna-test-proves-historians-wrong

>>9162614
>Be powerful male Viking with status
>Your favorite maiden dies of sickness in the rough winter, not fit for women
>For her burial you want to show her the utmost respect and give her something of yours to go with
>Leave some of the weapons and armor you used to fight for her as a sign of undying love
>2000 years later faggots think a weak fucking woman was doing viking shit

Ok, I think this has been long overdue. This weird and random point-scoring system the genders are doing has to end. Just looking at history to find how many "kewl women" we can find to give more points to women is stupid. Lets just resolve this issue once and for all.

Randomly pick 10 men and 10 women as average as they come. Be sure they have no special talents at all. Then for a year:

1) Train a man and a woman to play chess
2) Train a man and a woman to do hand to hand combat (martial arts)
3) Train a man and a woman to do armed combat (swords)
4) Train a man and a woman to shoot (either guns or bows)
5) Train a man and a woman to do math olympiads
6) Train a man and a woman to do IQ tests
7) Train a man and a woman to do crossword puzzles
8) Train a man and a woman to do weight lifting
9) Train a man and a woman to do speed running
10) Train a man and a woman to drive

Then at the end of the year have them all directly face off against each other. Give the chess players a best of 3, make the fighters fight one on one, give the math ones the next IMO problems, let the drivers race in Tokyo, etc.

Then count how many men win and how many women win. The winning gender becomes the supeior one and the other gets demoted to second class citizens.

AND DONE.
DONE WITH THIS STUPID GAME OF WHICH GENDER IS BETTER BULLSHIT.

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>>9162631
Civilization was built on people doing their niche job very well. Someone is trying to tear this down.

unironically methamphetamine

>>9162551
/sci/ is not your personal poisoner's guild

>>9162551
blood thinners raise heart rate.
Just raise the heart rate a bit more like >>9162558 said

we have and i enjoy shooting them into your mothers mouth every night

>>9162510
Spermatozoa aren't alive.

This is like asking why no-one has built a rocket that can transport an entire self-sufficient colony to Alpha Centauri yet, or why we don't have lasers that can blow up the moon. There are several intermediate steps we'd have to master before getting to that point.

Good point.

Science is literally retarded. I'm going full Mormon.

>>9162480
>what is a misdiagnosis

>>9162524

>scientific research doesn't mean shit