Ansel Easton Adams (February 20, 1902 – April 22, 1984) was an American photographer and environmentalist best known for his black-and-white landscape photographs of the American West, especially Yosemite National Park.
With Fred Archer, Adams developed the Zone System as a way to determine proper exposure and adjust the contrast of the final print. The resulting clarity and depth characterized his photographs and the work of those to whom he taught the system. Adams primarily used large-format cameras despite their size, weight, setup time, and film cost, because their high resolution helped ensure sharpness in his images.
Adams founded the Group f/64 along with fellow photographers Willard Van Dyke and Edward Weston. Adams’s photographs are reproduced on calendars, posters, and in books, making his photographs widely distributed.
Ansel Adams’s photograph The Tetons and the Snake River has the distinction of being one of the 115 images recorded on the Voyager Golden Record aboard the Voyager spacecraft. These images were selected to convey information about humans, plants and animals, and geological features of the Earth to a possible alien civilization. These photographs eloquently mirror his favorite saying, a Gaelic mantra, which states “I know that I am one with beauty and that my comrades are one. Let our souls be mountains, Let our spirits be stars, Let our hearts be worlds.”
This might look like a distant web of galaxies captured by a powerful telescope, but it’s actually a microscopic image of a newborn nerve cell. The human brain contains more cells than there are stars in our galaxy, and the most important cells are neurons, which are nerve cells responsible for transmitting and processing electro-chemical signals at up to 320 km/h. This chemical signalling occurs through synapses—specialised connections with other cells, like wires in a computer. Each cell can receive input from thousands of others, so a typical neuron can have up to ten thousand synapses—i.e., can communicate with up to ten thousand other neurons, muscle cells, and glands. Estimates suggest that adult humans have approximately 100 billion neurons in their brain, but unlike most cells, neurons don’t undergo cell division, so if they’re damaged they don’t grow back—except, apparently, in the hippocampus (associated with memory) and the olfactory bulb (associated with sense of smell). The process by which this occurs is unclear, and this image was taken during a project to determine how neurons are born—it actually depicts newborn nerve cells in the brain.
HAL 9000 is a character in Arthur C. Clarke’s science fiction Space Odyssey saga. The primary antagonist in 2001: A Space Odyssey, HAL (Heuristically programmed ALgorithmic computer) is an artificial intelligence that controls the systems of the Discovery One spacecraft and interacts with the ship’s astronaut crew. Being a computer, HAL has no distinct physical form, though is visually represented as a red television-camera eye located on equipment panels throughout the ship. HAL is voiced by Douglas Rain in the two film adaptations of the Space Odyssey saga, and speaks in a soft, calm voice and a conversational manner, in contrast to the crewmen, David Bowman and Frank Poole, who speak tersely and with little emotional inflection. HAL became operational on 12 January 1992, at the HAL Laboratories in Urbana, Illinois, as production number 3; in the film 2001 the activation year was 1992, and 1991 in earlier screenplays. In addition to maintaining the Discovery One spacecraft systems during the interplanetary mission to Jupiter, HAL is capable of speech, speech recognition, facial recognition, natural language processing, lip reading, art appreciation, interpreting and reproducing emotional behaviours, reasoning, and playing chess.
You have noticed that everything an Indian does is in a circle,
and that is because the Power of the World always works in circles,
and everything and everything tries to be round.
In the old days all our power came to us from the sacred hoop
of the nation and so long as the hoop was unbroken the people
flourished. The flowering tree was the living center of the hoop,
and the circle of the four quarters nourished it. The east gave peace
and light, the south gave warmth, the west gave rain and the north
with its cold and mighty wind gave strength and endurance. This
knowledge came to us from the outer world with our religion.
Everything the power of the world does is done in a circle.
The sky is round and I have heard that the earth is round like a ball
and so are all the stars. The wind, in its greatest power, whirls.
Birds make their nests in circles, for theirs is the same religion as ours.
The sun comes forth and goes down again in a circle. The moon
does the same and both are round. Even the seasons form a great
circle in their changing and always come back again to where they were.
The life of a man is a circle from childhood to childhood, and so it is
in everything where power moves. Our teepees were round like the
nests of birds, and these were always set in a circle, the nation’s hoop,
a nest of many nests, where the Great Spirit meant for us to hatch our children.
Black Elk, Holy Man of the Oglala Sioux 1863-1950