/sci/ - Science & Math

I were trying to intuitively figure out how derivatives work by constructing it into a physical model, and I failed. I started to think of it as multiple cogwheels being connected to one another with different sizes, where a turn in one wheel (change in motion) equates to a different motion in another wheel. The actual result is multiplication, not derivation.

But seeing this gif, i realize there are connections between mathematical properties (in pic related, a circle is being constructed by two orthogonal axis connected by a bar), so maybe I'm not smart enough to construct a derivation machine. But someone might be. Here's a challenge: construct a physical model of a derivative. Meaning some sort of physical calculator made up by physical objects, cogwheels, rulers, springs, you name it, to accurately depict a derivation function. The idea is that you should be able to build this in real life and show how it works. Only a blueprint of it working would suffice, of course.

Maybe this already exists? I don't know. I've searched around for it and I haven't found it.

that's about all i have. not sure how cool they are.

Where'd everybody go

>>5493259

We all know that magnets repel each other, How would it be possible to use that force on other materials as means of propulsion ?

If you're really thinking of going through with this, good luck and godspeed OP, because you're going to need it in this Puritan nation. If there's legislation for this sort of thing, then surely there must be some set of guidelines for what constitutes as an established religion, wouldn't you think?

Hello /sci/.

As an amateur chemist, I was interested in a synthesis of Chloroform just to explore the science behind it.

I firstly made an ice bath, which is at -5C or so, and then added 25mL of household bleach to a beaker. I added this to the ice bath for a minute or so, before adding 0.5mL of pure acetone, and let this sit. About 8 minutes has passed, and I am unable to observe a reaction. It is still ice cold, and the solution is a milky-white with no distinct layers.

What have I done wrong, or does the reaction need more time to progress?

Thankyou.

I've been looking into robotic locomotion, as a hobby. I am wondering if there's any reason a radially symmetric quadruped can't change direction at will.

For example, a horse can't suddenly change the orientation of its legs to run like a crab. Is there any reason why we can't design robots that simply rotate the orientation so they can switch between the two, provided they don't have an especially long body?

Granted this isn't exactly a pure science topic, but /g/ was not helpful.

Can I get more pictures like this?

http://www.facebook.com/event.php?eid=148346771865248

Those cunts are trying to get rid of science and get more art fags!

The States had to "send" a person to the moon in order to have the upper hand in the space race/Cold War.

Dear /sci/,

I want one of these. What's it called?

moar like this

derp it's a protein

>>1076372

I'm going back to school this year, I hope I can do well enough to get into it.

Some engineering.