Showing posts with label Light. Show all posts
Showing posts with label Light. Show all posts

Saturday, December 5, 2015

Light and Dark

Light is life. The Sun is one star among a continuous and distinctive band of stars called the main sequence. Carl Sagan reminds us that when we look up at the night sky, each shinning star light is generated by nuclear fusion.

Fusion powers the stars.


Regions of star formation. Carina Nebula, the Eagle Nebula, and IC 2944.
source: ESO

The Sun like other stars, generates energy in its core by fusing hydrogen atoms into helium. The dense core of the Sun fuses 620 million metric tons of hydrogen per second.

The Sun gives us light. As it happens, light is a precious commodity.
...astronomers have been forced to confront the possibility that most of the universe is invisible, and that all the glittering chains of galaxies are no more substantial, no more reliable guides to physical reality, than greasepaint on the face of a clown.
― Dennis Overbye
Atoms are the stuff of stars and of starlight. Yet as chance would have it, atoms constitute a mere 5% of the universe by weight. Some 20% of the universe is made up of mysterious invisible particles called dark matter. An unknown form of energy called dark energy constitutes the remaining 70% of the universe.

Arctic light
Frank Olsen

“let me die
from having been drunk on
indigo skies, my liver...
overflowing with stars.”

― Sanober Khan

REFERENCES

Saturday, February 23, 2013

Revealing Light

In the documentary film "Ansel Adams, Photographer", narrator Beaumont Newhall says
“Light to Adams, as to all photographers, is the great medium of revelation.”
The phrase "light is the great medium of revelation" was first expressed in a 19th century sermon by Princeton theologian Charles Hodge.

In making the unsupportable assertion that god is light, Hodge, a fundamentalist confined by dogma, nevertheless makes arguably insightful observations about light:
  1. Light is the great medium of revelation
  2. Light in the natural world is the source or necessary condition of life
  3. Light is the source of all beauty

The Tetons and The Snake River by Ansel Adams, 1942.

This "revelation" is not of the divine, or of a self-serving deity, rather is self-evident phenomena and beauty revealed to- or discovered by- those who make a concerted practice of seeing, hearing, feeling, tasting, and touching the natural world.

Light encompasses all gradations of luminosity ― between blinding highlight and the dimmest shadow.
"When you light a candle, you also cast a shadow."
― Ursula Le Guin

Ansel Adams photographed the American West revealing its sublime beauty for generations to contemplate.

Adams was a student of light, both as an aesthetic and scientific pursuit (cf. The Zone System).

Of Adams' attention and sensitivity to the quality of light, Beaumont Newhall says
“Through its moods: noon brilliance, first light, dawn; through the illusion of substance: snow, charred wood, stone and the magic of a place and a moment, he conveys universal experience."

McDonald Lake, Glacier National Park  by Ansel Adams 1933-42.

REFERENCES

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