Seventeen Cameras on Curiosity
This graphic shows the locations of the cameras on NASA’s Curiosity rover. The rover’s mast features seven cameras: the Remote Micro Imager, part of the Chemistry and Camera suite; four black-and-white Navigation Cameras (two on the left and two on the right) and two color Mast Cameras (Mastcams). The left Mastcam has a 34-millimeter lens and the right Mastcam has a 100-millimeter lens.
There is one camera on the end of a robotic arm that is stowed in this graphic; it is called the Mars Hand Lens Imager (MAHLI).
There are nine cameras hard-mounted to the rover: two pairs of black-and-white Hazard Avoidance Cameras in the front, another two pair mounted to the rear of the rover, (dashed arrows in the graphic) and the color Mars Descent Imager (MARDI).
From where do these sensors come? And what are they all for?
Continue reading Curiosity, your sensors make me curious, who created them?
||Defense Mapping Agency
Lunar Topographic Orthophotomap (LTO) Series.
Since Hosni Mubarak’s government fell last year, many of Egypt’s museums have been looted.
And the looting has gone beyond museums — now criminals are digging up archaeological sites and stealing their treasures.
Anchor Marco Werman speaks with Carol Redmount, an archaeologist at the University of California, about her efforts to stop the looting in Egypt.
Redmount described the looters stealing from El-Hibeh’s archaeological dig as “essentially a gang of criminals, headed by a master criminal, who escaped from jail after the revolution.”
via Egypt Looters Ransack Archaeological Sites | @pritheworld.
In set theory, an infinite set is not considered to be created by some mathematical process such as “adding one element” that is then carried out “an infinite number of times”. Instead, a particular infinite set (such as the set of all natural numbers) is said to already exist, “by fiat”, as an assumption or an axiom. Given this infinite set, other infinite sets are then proven to exist as well, as a logical consequence. But it is still a natural philosophical question to contemplate some physical action that actually completes after an infinite number of discrete steps; and the interpretation of this question using set theory gives rise to the paradoxes of the supertask.
Tristram Shandy, the hero of a novel by Laurence Sterne, writes his autobiography so conscientiously that it takes him one year to lay down the events of one day. If he is mortal he can never terminate; but if he lived forever then no part of his diary would remain unwritten, for to each day of his life a year devoted to that day’s description would correspond.
via Paradoxes of set theory – Wikipedia, the free encyclopedia.
IMSLP stands for International Music Score Library Project. The logo is a capital letter A, taken from the very first press-printed book of polyphonic music, theHarmonice Musices Odhecaton, published in 1501. Its printer, Ottaviano Petrucci, is this library’s namesake.
IMSLP/Petrucci Music Library: Free Public Domain Sheet Music.