Infinityflesh00 - Ergoprox00

From: Istoria e dimostrazioni intorno alle macchie solari e loro accidenti comprese in tre lettere scritte all'illvstrissimo signor Marco Velseri … dal signor Galileo Galilei … Si aggiungono nel fine le lettere, e disquisizioni del finto Apelle, Giacomo Mascardi, Roma, 1613 [Yale University Library, Beinecke Rare Book and Manuscript Library, New Haven, CT]

Grumpy Cusk Eel

NOAA Ocean Explorer on flickr

Appleseed (2004)

By Marco Zagara

Music on

Gloomy Wetland

(by alann_bgt)

Did you guys know that the most recent version of sharks have fins that are kinda leg like and they like to walk up onto land?

We have three colored segment in this animation. Surprisingly the length of the longest one is always the sum of the length of the two smaller ones.

This is actually a very special case of Ptolemy’s theorem. The theorem gives a connection between the sides and the diagonals of a cyclic quadrilateral. In this case the length of the dashed lines is equal so the theorem can be simplified to the statement above. 

My frozen land