Coretta Scott King
(via afro-art-chick)
spencer's boy
master composter, worm translator, urban advocate, organic pioneer ...
Children of the Corn | 1940
A group of African American migrant children sitting on the porch of a house on the Bayou Bourbeau plantation, Natchitoches, Louisianna, 1940.
(via soulbrotherv2)
![soulbrotherv2:
Hidden Pattern Of Rape Helped Stir Civil Rights Movement
Recy Taylor was a 24-year-old mother when she was abducted at gunpoint and gang raped by a group of white men in Alabama in 1944. An activist named Rosa Parks was sent to investigate the attack.
Taylor’s case, and a number of others like hers, helped spark the civil rights movement. Danielle Lynn McGuire explores the story and the pattern of racist, sexual assaults on black women, in her book, At the Dark End of the Street.
In Tell Me More’s weekly “Behind Closed Doors” conversation, host Michel Martin speaks with the author as well as with rape survivor, Recy Taylor. [To hear full story and interview with Ms. Taylor.]](http://24.media.tumblr.com/9187585dd6dfcfe8b2c077b1cb7df79b/tumblr_mic9d15gC31qzmh88o1_500.jpg)
Hidden Pattern Of Rape Helped Stir Civil Rights Movement
Recy Taylor was a 24-year-old mother when she was abducted at gunpoint and gang raped by a group of white men in Alabama in 1944. An activist named Rosa Parks was sent to investigate the attack.
In Tell Me More’s weekly “Behind Closed Doors” conversation, host Michel Martin speaks with the author as well as with rape survivor, Recy Taylor. [To hear full story and interview with Ms. Taylor.]
Plants dying? No time to use compost? Design your own keyhole garden. Then regularly add water and compost into the middle hatch. Easy.
The women and children show step-by-step how to build a keyhole garden.
(Source: keyholefarms.com)
(via hollowcast)
(Source: status-excessu, via hollowcast)
An even number of (at least 8) tetrahedra can be connected along their edges to form a ring in a way that allows them to be continuously rotated “inside-out” without disconnecting. Such configurations are commonly referred to as kaleidocycles. Shown above are kaleidocycles with 8, 10, and 12 tetrahedra exhibiting 4, 5, and 6-fold rotational symmetry, respectively. There has to be at least 8 tetrahedra, because any less would result in the tetrahedra colliding into each other at certain instances of the rotation. You can even try to make your own paper model using this guide.
Mathematica code:
v1[t_] :=
{Cos[t], 0, Sin[t]}
v2[t_, a_] :=
1/Sqrt[1 + Sin[t]^2 Tan[a]^2] {-Sin[t], -Sin[t] Tan[a], Cos[t]}
v3[t_, a_] :=
1/Sqrt[1 + Sin[t]^2 Tan[a]^2] {-Sin[t]^2 Tan[a], 1, Cos[t] Sin[t] Tan[a]}
P[t_, a_] :=
{v3[t, a][[2]]/Tan[a] - v3[t, a][[1]], 0, -v3[t, a][[3]]/2}
Q[t_, a_] :=
{v3[t, a][[2]]/Tan[a], v3[t, a][[2]], v3[t, a][[3]]/2}
vertices[t_, a_] :=
{P[t, a] - Sqrt[2]/2 v1[t], P[t, a] + Sqrt[2]/2 v1[t],
Q[t, a] - Sqrt[2]/2 v2[t, a], Q[t, a] + Sqrt[2]/2 v2[t, a]}
Tetrahedron[T_, t_, a_, o_] :=
Table[
{FaceForm[White], Opacity[o], EdgeForm[Thick],
Polygon[
Table[
T[vertices[t, a][[1 + Mod[i + j, 4]]]], {i, 1, 3, 1}]]},
{j, 0, 3, 1}]
Kaleidocycle[pr_, t_, n_, o_, A_] := Graphics3D[
Rotate[
Table[
Rotate[
Table[
Tetrahedron[T, t, 2 Pi/n, o],
{T, {TransformationFunction[IdentityMatrix[4]],
ReflectionTransform[{-Sin[2 Pi/n], Cos[2 Pi/n], 0}]}}],
r*4 Pi/n, {0, 0, 1}],
{r, 0, n - 1, 1}],
A*Sin[t], {0, 1, 0}],
PlotRange -> pr, ImageSize -> 500, Axes -> False, Boxed -> False,
Lighting -> "Neutral", ViewPoint -> {0, 0, 2}, Background -> White ]
Manipulate[
Kaleidocycle[pr, t, n, o, A],
{pr, 1.5, 50}, {t, 0, 2 Pi}, {n, 8, 16, 1},{o, 1, 0}, {{A, 0}, 0, 2 Pi}]
(via katiacambia)
