comptine d'un autre été l'après midi

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This early Baroque crown was made in 1566 by Hans Schmaltz in Fribourg, Switzerland. It is currently on display in room 84 of the Victoria and Albert museum in London.

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Caspar David Friedrich (1774-1840) - The Cemetery Entrance, 1825

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Don’t speak about your strength in front of a someone who’s weak,

Your happiness in front of someone who’s sad,

Your freedom in front of a prisoner,

Or your money in front of someone who’s poor.

Weight your words and consider others feelings.

(Source: ttempera, via part-l-ypoison)

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“One For The Money” paperback cover illustration, 1965

(Source: vintagegal, via vintagegal)

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Image 1: Visualisation of an approximation of a square wave by taking the first 1, 2, 3 and 4 terms of its Fourier series.

θis 2πt.Image 2: Visualisation of an approximation of a sawtooth wave of the same amplitude and frequency for comparison.

In mathematics, a Fourier series is a way to represent a wave-like function as a combination of simple sine waves. More formally, it decomposes any periodic function or periodic signal into the sum of a (possibly infinite) set of simple oscillating functions, namely sines and cosines (or complex exponentials).

Image 4 - 5: A simple Fourier series.

Plot of a periodic identity function, a sawtooth wave & Animated plot of the first five successive partial Fourier series.Source: Fourier Series - See more at Fourier Series on mathworld.wolfram.

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