Archived threads in /sci/ - Science & Math - 1856. page

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Is the Earth Flat or is it a Globe?

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On a molecular level, how exactly do sound waves go around corners? Is it just that the pressure of the more central parts of the wavefront forces the particles on the outer edge to expand out?

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What would be a good experimental question to ask people for a survey?

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For a while now I have been trying to understand the concept of space-time and it hasn't quite clicked. If I could get your interpretation or how it clicked for you, it would help a lot.

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Is there a reason why everybody isn't wanting to become a Registered Nurse?

You make around $65,000 a year, and only have to go to college for two years.


In other words, you're making more than enough engineer while only going to college for two years

Why wasn't I told about this in school? Why aren't you and I wanting to become one right now? Let's take the medical pill, bros

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Have any of you used your knowledge of math and/or science in a casual setting that didn't involve money, your job, or cooking?

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/sci/

Does anyone have any ideas on how to separate beta carotene, capsaicin, and 95% EtOH in water?

I'm doing at at home extraction of capsaicin from habbenero chillis using 95% EtOH (Everclear), however as it turns out beta carotene is also readily soluble in ethanol.

Can anyone propose a way to remove the beta carotene from the Capsaicin/EtOH solution?

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If light cannot escape from a black hole then how does gravity considering it has the same speed as light?

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https://plus.google.com/106680226131440966362/posts/X9sNPQGfSVF

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Today is pi's day.
What we can do?
3...

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So what do you think is at the end of Cosmos? Some giant wall or black hole?

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Is there a way to calculate the escape velocity of a black hole? Obviously it has to be greater than or equal to the speed of light but does the formula (2GM/r)^.5 apply to black holes If so what is the radius of a black hole? is it the Schwarzschild radius (I think this is just the radius of the event horizon) or is it simply 0 seeing how their volume is 0.

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Hey /sci/entists, /k/unt here.

When I fire a round in my gun, the shot bullet has a number of important variables for me.
Mainly:
>weight
>speed

Increasing only the weight of a bullet means the same amount of "energy," or ft-lbs as any other bullet fired (potentially) but the range is changed drastically. The affect on the target can also change with dramatic change in weight but nothing else.

Adding more powder, or using a more potent explosive, roughly means increasing my speed. I could also have a more efficiently designed brass case/chamber or of course, lighten the bullet.

So they are related to eachother but can also be separate.

Other variables matter alot too, pressure inside the chamber during firing of course, but it all translates down to how much ft-lbs you can put into a target, and at what range. The more for each the better. And what directly affects those right before impact is
>speed of the bullet
>weight of the bullet

Now is energy really going anywhere but the velocity of my bullet once it is fired? I know nothing perfect, but is there really an appreciable amount of energy being "lost" to anything but travel of the bullet?

>friction in the barrel
But how do you even change that for a positive effect?

>heat from the firing
Energy that is wasted as heat instead of expanding force?

Excuse my imperfect technical speak, if you could.

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How do you read the decimal number:
>3.14
Is it
a) Three point one four
b) Three point fourteen

Why are my professors using b) instead of a) , and are they retarded?

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So lately I've been thinking about the speed of light and black holes and came to a conclusion after a study on light in a black hole that, in theory a ship could be going at the speed of light and get stuck in the black holes gravity. I have come to this conclusion due to the fact that it has been said the even light cannot escape the gravity of a black hole. Could this technically make light speed ships even more dangerous than the concept already is?