January 2012
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December 2011
2 posts
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November 2011
1 post
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October 2011
6 posts
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Anonymous asked: How can I be a writer on sayitwithscience?
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∑ F = ma
… is a differential equation:
where acceleration a(t), velocity v(t), and displacement s(t) are all vectors and functions of time. This equation is second-order in position because the highest derivative is the second time derivative of position. Combined with the right boundary conditions, s(t) (also called the trajectory: path through space and time) can be determined.
This differential...
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Hello followers!
The contributors have been on a bit of a break, but we’ll be back soon with a new batch of posts. In the meantime, we’d like to get to know our readers!
What subject areas do you study/where are you in your education/what classes are you taking?
Any requests for future Say it with Science posts?
September 2011
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Anonymous asked: Hey sayitwithscience - if I'm not mistaken, the featured post regarding the Higgs boson is a bit misleading; I would think it's too early to draw such a conclusion since the LHC isn't running at full power yet? Here's a bit of info from a quick google search: "...LHC will be shut down at end of 2011 with a view to run at full capacity in 2013" Hope you can clear this...
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recurrent-dreams asked: Thank you to the contributors! This blog is AMAZING.
dez-ray asked: Can someone please explain what I am studying when I am studying limits, delta & epsilon. I am having a really difficult time visualizing what is going on and what these things represent... Not so much with limits. I "know" what a limit is,,, but how they all tie in together & the other two specifically. If someone could help I would be ETERNALLY grateful!
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August 2011
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Anonymous asked: The Doppler Shift formulae for sound waves are pretty easy to visualize and derive, but why can't the same principles be used for electromagnetic waves? What are the resulting formulae?
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Gabriel's Horn
Gabriel’s Horn is a three dimensional surface that contains a finite volume but has an infinite surface area. It is made by taking the two dimensional graph of y=1/x and revolving it around the x-axis (with the domain of x ≥ 1). If we look at x coordinates from 1 to a, the volume can be found by the equation: Which is really just sum of the area of each circular cross section, hence it is...
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Vedic Multiplication
(Technically called Nikhilam Navatashcaramam Dashatah) This is a quick and simple way to multiply any two numbers. It’s easiest when the numbers are both close to a power of ten, but it will always work. The first step is to chose a power of ten that the numbers are closest to. In my example I will find the product of 14 and 12. Since 12 and 14 are close to 10 I will chose 10. 14...
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dozennebulae asked: [MC integration] Don't you already have to know something about the volume of integration in order to determine if a point inside the hypercube is also in the region of integration?
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July 2011
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