A magnetic field visualized
Love simple, effective demonstrations like this!
Speaking of magnetism, have you seen this amazing ferrofluids video yet?
Best shit ever
(Source: iraffiruse, via swanaynay)
A magnetic field visualized
Love simple, effective demonstrations like this!
Speaking of magnetism, have you seen this amazing ferrofluids video yet?
(Source: metaconscious, via violent-buddhist)
(Source: beautifulskeleton, via violent-buddhist)
![matthen:
In signal processing, there is a very important way of combining two signals called convolution. [The german word for convolution is Faltung which means folding.] Here we start by convolving a square signal with another. One square is slid across from left to right, and we look at how much area there is under the two shapes (coloured in red). The thick black line measures how big this area is, and that ends up being the convolution. Next we convolve the convolution with another square and keep going. Note how this makes the curve smoother and smoother, and it is actually turning it into a Bell Curve, or Gaussian. Can anyone explain why this might be, and hence an interesting link between signal processing and probability theory? [more] [code]](http://24.media.tumblr.com/tumblr_m3r24cUMJ01qfg7o3o1_400.gif)
In signal processing, there is a very important way of combining two signals called convolution. [The german word for convolution is Faltung which means folding.] Here we start by convolving a square signal with another. One square is slid across from left to right, and we look at how much area there is under the two shapes (coloured in red). The thick black line measures how big this area is, and that ends up being the convolution. Next we convolve the convolution with another square and keep going. Note how this makes the curve smoother and smoother, and it is actually turning it into a Bell Curve, or Gaussian. Can anyone explain why this might be, and hence an interesting link between signal processing and probability theory? [more] [code]
A shark gives a diver a high-five. Eli Martinez was interacting with the lemon shark in the balmy waters off the coast of The Bahamas. Eli, who works as the editor of Shark Diving magazine, said: “This particular shark I had encountered before. She is very laid-back so I knew if I held my hand out she would come over. At first she was swimming straight towards me, but I didn’t expect her to turn at the last moment. She tapped my palm with her fin like we were high-five-ing.” Picture: CATERS NEWS
(via mothernaturenetwork)
