lighting diagrams


Edwin D. Babbitt. The Principles of Light and Color. 1878-1896.

popotum  asked:

also can you give me recommendations for poets to read (especially for someone who enjoys beautiful things but doesn't read a whole lot of poetry)

this was supposed to be a quick & dirty rec list for my girl but then it got out of hand so i’ve broken it off into categories 4 ya! this is by no means an extensive list but i was starting to realize that this was verging on Too Long. happy readings & i hope u find something that moves along the soil of ur soul!!


margaret atwood / they are hostile nations, marrying the hangman, we ate the birds, the poet has come back
louise gluck / all hallows, mock orange, elms, nocturne, vespers: parousia, adult grief, mutable earth 
gregory orr / love poem, trauma (storm), gathering the bones together, origin of the marble forest, when eurydice saw him
mahmoud darwish / your night is of lilac, in jerusalem, in the presence of absence, now as you awaken, psalm one 
mark strand / the dreadful has already happened, eating poetry, keeping things whole, lines for winter, tomorrow
ee cummings / somewhere i have never travelled, buffalo bill’s, if there are any heavens, luminous tendril of celestial wish, pity this monster manunkind
michael ondaatje / application for a driving license, the cinnamon peeler, the time around scars, excerpts from the collected works of billy the kid
jack gilbert / failing and flying, it is difficult to speak of the night, the sirens again, how much of that is left in me?, the forgotten dialect of the heart
pablo neruda / one hundred love sonnets: xvii, white thighs, hillocks of whiteness, absencehere i love you, clenched soul
anne carson / glass essay, book of isaiah, compostela, short talk on hedonism & sylvia plath, ghost q & a, an excerpt from autobiography of red, excerpts from nox 


creuxing / obsessed with redefinding girlhood, the summer starts in your car, another meteor crashed outside, the girl with frizzy hair and thin wire glasses
teamcaptains / a terrible crime in the tropics, reaping, zach calavera, he left, and the pink electricity, golden age 
mythaelogy / an attempt in poetry, atlas hands, wandering hearts, her, psychopomp & circumstance, i thought it had gone away
wefragilehumans / non est, luck is a funny thing, war chant, severe weather warning, a study in restoration
deergodareyoulistening / home (reforming), lighting & thunder, a diagram, ceremony, red elk, how to eat a moon 
starredsoul / a creation tale, how we learn what it meansall along, the mother weepingdreams of the moon and birds singing together
/ deep sea diver.mp3, space age surrealism, the fact of the matter is you need to get your heart back, time travel wears a black tracksuit 
katejustkate / incase it doesn’t work out, iphone notes therapy, coma dreams, it took 3 long-ass days for you to respond to my ‘are u alive’ text
ohgdlights, the way out of winesburg, ohio, to m // for j // from me, we ran like wolves, variations on a tomato
inelegancies /  in the aftermath we are left with a girl, in another universes the sky is always pink, rules for the internet, for children


tonight, in oakland by danez smith
tinder by keith s. wilson
if being a lesbian were anything like netflix movies portrayed it to be by southwestwitch
bad poem by kelsey danielle
padlocked chest pt 1 / afterthelonely
a bronze god, or a letter on demand by clifton gachagua
lilac time by joan newmann
notes from the antichrist’s guardian angel by notbecauseofvictories
with ruins & persimmons by li-young lee 
for my best friend by  crimescened
my first lover speaks to me as i sleep with her by raven jackson
phoenix by overwhelmington
how the signs die, or fall in love, or both, maybe by cursedvideogame​ 
national geographic by elisabethhewer 
your airplanes by rachel mckibbens
sierra doesn’t watch when the world ends by wildflowerveins 
before by carl adamshick 
there is a gold light in certain old paintings by donald justice 
afterimage, 2015 by bhalbers
other lives and dimensions and finally a love poem by bob hicok
folly by antonina palisano 
albuquerque, nm by 7cigars
sometimes when on fire by kathryn regina
heart by bhanu kapil

At first, heartbreak made me beautiful.
My skin fluoresced. I hypnotized trees.
The orphans followed me around town,
drunk on my pain. I ate only my own
hunger, gave off a scent like bitter oranges
or chlorine. Loss left me strangely whole,
as if my sadness, were it strong enough,
could turn your ship around. That was back
when I aged. Now, like an astronomer
who seeks no first causes, but only to map
the connections pinned out over the sea,
I want to diagram the light that shines out
through the holes you pricked into me.
—  Maureen Thorson, from Applies to Oranges

Frank G. Johnson. Solar Spectrum, Relative Magnitudes of the Planets, The Zodiac, Recomposition of Light, Interference in an Ellipse, Venus as a Morning and Evening Star, Electrical Effects, The Solar Microscope, The Arch of the Rainbow, Composition of Colors of the Solar Spectrum. Johnson’s Natural Philosophy, and Key to Philosophical Charts. 1872.  Contd from here

wingedlugz11  asked:

I was wondering in the eclipse photos why does the light 'bend', so to speak, around the moon?

Hey! If you’re referring to a picture like this one below, the bright light seen is the outer layers of the sun (the corona), which aren’t covered by the moon:

However, it’s important to note that the moon’s gravity is not strong enough to noticeably bend any light around itself. The sun’s gravity is capable of doing this, which is why during solar eclipses astronomers are able to see the light from stars being bent around the sun. This is because the sun’s gravity changes the path of the light waves as they pass by. This effect is called gravitational lensing and was first observed in the late 1910s, and was one of the first direct confirmations of Einstein’s general theory of relativity. (For more information on that, check out THIS post). Below are two diagrams showing light bending around the sun (and how the star appears to be in a different location because its light is bent), and one real picture of an extreme example of gravitational lensing of a galaxy. Image sources: 1 2 3

Thanks for your question! If I did a bad job explaining or if you have any follow-ups, feel free to let me know! ps sorry it took so long to answer, I’ve been busy with classes lol.


Bell’s Theorem: The Quantum Venn Diagram Paradox

2 light filters at 45° angle: less light

3 light filters at 22,5°+22,5° angles: more light???



Concave - CONvering Mirror
Convex - Diverging Mirror

1/o + 1/i = 1/f = 2/r         f = r/2  or  1/2r 

o > r  Real, INverted, Reduced 

o = r  Real, INverted, Same Size

r > o > f  Real, INverted, Enlarged 

o < f  Virtual, UPright, ENLarged

o = f  i @ infinity 

Real Images = Inverted 

Virtual Images = Upright 

Convex Lenses ~ ConCave Mirror Except:

  • Real Image on OPPOSITE side of Lens as Object, Virtual Images on SAME side as object

Concave Lenses ~ ConVex Mirrors (Diverging- Virtual UPright) Except:

  • Virtual image formed by Lens is on SAME side of lens as object 

Farsighted = Converging Lens (reading glasses)

Nearsighted = Diverging Lens


Convergers = + Focal Point, Real, Inverted, Image on side of Observer 

  • if o < f —> rules for diverters apply 

Divergers = - Focal point, Virtual, Upright, Reduced, Image NOT on side as observer 


The Vesica Piscis is a symbol made from two circles of the same radius, intersecting in such a way that the center of each circle lies on the circumference of the other. The name literally means the bladder of the fish in Latin. In the Christian tradition, it is a reference to Christ, as in ichthys. It is called a mandorla (“almond”) in India and known in the early Mesopotamian, African, and Asian civilizations.

Geometry – The symbol is formed from the almond-shaped area in the overlap between the circles, as shown in black in the diagram - for certain purposes also including the upper arcs as far as the edges of a rectangle whose sides coincide with the widest points of the almond (as shown in light blue in the diagram). The resulting figure looks like a stylized fish, or in the extended version like a flattened Greek letter alpha.

Mystical and Religious Significance - It has been the subject of mystical speculation at several periods of history, perhaps first among the Pythagoreans, who considered it a holy figure. The mathematical ratio of its width (measured to the endpoints of the “body”, not including the “tail”) to its height was reportedly believed by them to be 265:153. This ratio, equal to 1.73203, was thought of as a holy number, called the measure of the fish.

The geometric ratio of these dimensions is actually the square root of 3, or 1.73205… (since if you draw straight lines connecting the centers of the two circles with each other, and with the two points where the circles intersect, then you get two equilateral triangles joined along an edge, as shown in light red in the diagram).

The ratio 265:153 is an approximation to the square root of 3, with the property that no better approximation can be obtained with smaller whole numbers. The number 153 appears in the Gospel of John (21:11) as the exact number of fish Jesus caused to be caught in a miraculous catch of fish, which is thought by some to be a coded reference to Pythagorean beliefs. Ichthys a symbol used by early Christians, more popularly known as the fish symbol is created by the almond shape and the light blue extension as seen in the Construction Diagram of the Vesica Pisces above.

Uses of the shape – Other uses of the shape include that by some early peoples of the almond-shaped central area as a representation of the female genitals, and the use of a similar (horizontally-oriented) fish symbol called the Ichthys by early Christians. In Christian art, some aureolas are in the shape of a vertically oriented vesica piscis, and the seals of ecclesiastical organizations can be enclosed within a vertically oriented vesica piscis (instead of the more usual circular enclosure). The most common modern object based on the vesica piscis is the American football, which resembles the interior almond-shaped area of the vesica piscis swept about its long “axis” to produce a 3D object with rotational symmetry.


how I take pics of my stuff. iPod touch, window light or my desk lamp since I’m usually sketching at night OvO. Been using a sketchbook as a light reflector. Made a diagram of this a little while back (here)…hope this is more clear for ya anon :)