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/sci/ Science & Math

Threads added between 2014/01/15 and 2014/01/22

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Most viewed threads in this category

12 more posts in this thread. [Missing image file: read.jpg]
What would you do if you were wealthy enough not to work?
28 more posts in this thread. [Missing image file: Gears-1.jpg]
How do I learn to function as a machine and disregard all emotional input? >inb4 can't >inb4 sociopath
39 more posts in this thread. [Missing image file: 61-rb5ZmMgL._SL1500_.jpg]
What calculator does /sci/ like to use? Can't go wrong with the TI-nspire CAS

Mysterious rock appears on Mars out of nowhere

43 more posts in this thread. [Missing image file: mars-mystery.jpg]
A mysterious rock which appeared in front of the Opportunity rover is “like nothing we’ve ever seen before”, according to Mars exploration scientists at Nasa. Experts said they were “completely confused” by both the origins and makeup of the object, which is currently being investigated by Opportunity’s various measuring instruments. Astronomers noticed the new rock had “appeared” without any explanation on an outcrop which had been empty just days earlier. The rover has been stuck photographing the same region of Mars for more than a month due to bad weather, with scientists at the Jet Propulsion Laboratory (JPL) in California monitoring the images it sends. Nasa issued a Mars status report entitled “encountering a surprise”, and lead Mars Exploration rover scientist Steve Squyres told a JPL event it seems the planet literally “keeps throwing new things at us”. He said the images, from 12 Martian days apart, were from no more than a couple of weeks ago. “We saw this rock just sitting here. It looks white around the edge in the middle and there’s a low spot in the centre that’s dark red – it looks like a jelly doughnut. “And it appeared, just plain appeared at that spot – and we haven’t ever driven over that spot.” http://www.independent.co.uk/news/science/nasa-says-mars-mystery-rock-that-appeared-from-nowhere-is-like-nothing-weve-ever-seen-before-9070323.html
14 more posts in this thread. [Missing image file: political_test.png]
Explain the "visionary/reactionary" axis in terms of measurable tendencies, or specific views. The other axes are more or less concrete, but I've never seen this description before.
19 more posts in this thread. [Missing image file: image.jpg]
Does light move slower going through a transparent solid?
9 more posts in this thread. [Missing image file: Blaise-Pascal1.jpg]
What is some recommended reading for mathematics or science? Anything to inspire please Thanks /sci/
19 more posts in this thread. [Missing image file: DERP.png]
Okay, le'ts say we have a matrix A. Now, what Matrixes beside (a i,j) = 0 or (a i,j) = 1 solves this equation: A^n = A for the love of god, I can`t find anything besides 1 and 0. Someone got a hint?
29 more posts in this thread. [Missing image file: sentence-structure.png]
/sci/, please take me back to when I was never taught this and teach me the math behind grammar and sentence structure

Music

7 more posts in this thread. [Missing image file: image.jpg]
/sci/entists, biologically explain the chills one gets from good music
25 more posts in this thread. [Missing image file: image.jpg]
Which field of engineering is lowest on the engineering totem pole? i.e. which field of engineering is seen as a joke major?
6 more posts in this thread. [Missing image file: calculus.png]
can we have a thread where we post math techniques we really enjoy using? mine is imaginary u substitutions. eg: the integral of 1/(1-x^2) substitute iu=x, idu=dx answer: i * arctan(x/i)
12 more posts in this thread. [Missing image file: formula2.png]
Hey /sci/ hoping you can help me, got a test coming and i'm not really understanding it. We're doing Negative Exponents and Reciprocals. Any tips or advice please? pic related: we have to do these types of equations without a calculator and fill in missing numbers
34 more posts in this thread. [Missing image file: 43.jpg]
Hey /sci/ how do you think the world will be in the year 2100? What kind of technologies do you think we have reached by that point?
9 more posts in this thread. [Missing image file: sygnux-black-hole.jpg]
Are there any similarities between a black hole, and the conditions beginning of the early universe? Besides the fact that understandings of science break down.
3 more posts in this thread. [Missing image file: comfy.jpg]
Write an equation that represents the following function. The number of animal species, N, of a certain body length, l, is inversely proportional to the square of l. Use the lower-case letter k for any constant of proportionality in your answer. >Why do math majors make understand what they ask you so difficult? English majors, at least, understand the idea of making complicated subjects simple, at least sometimes. >basically i need help
0 more posts in this thread. [Missing image file: Flowcahrt.png]
A simple guide for you all.

Little-o trickery

4 more posts in this thread. [Missing image file: little o.png]
Hey /sci/ Someone got me into these Ramsey Number kind of stuff and after reading about it some time ago... I got stuck in something that seems to be trivial The use o Little-o notation on these bounds; As far I can remember f(x) \in o(g(x)) \Leftrightarrow \forall n > 0 \left|f(x)\right| < n*\left|g(x)\right| for some x>a But something that is less than any positive number isn't going easily in my head Why isn't Big-o appropriate to this case?

Statistics

2 more posts in this thread. [Missing image file: stats.jpg]
What statistics test do you use when you want to compare a scale variable (dependant) to a nominal variable (independant) in a parametric test?

The Astronomy Picture of the Day

1 more posts in this thread. [Missing image file: neptune_despina_transit_c(...).jpg]
Despina, Moon of Neptune Despina is a tiny moon of Neptune. A mere 148 kilometers across, diminutive Despina was discovered in 1989, in images from the Voyager 2 spacecraft taken during its encounter with the solar system's most distant gas giant planet. But looking through the Voyager 2 data 20 years later, amateur image processor and philosophy professor Ted Stryk discovered something no one had recognized before -- images that show the shadow of Despina in transit across Neptune's blue cloud tops. His composite view of Despina and its shadow is composed of four archival frames taken on August 24, 1989, separated by nine minutes. Despina itself has been artificially brightened to make it easier to see. In ancient Greek mythology, Despina is a daughter of Poseidon, the Roman god Neptune. Tomorrow's picture: M83 star streams






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