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Sojourner Truth Radio | 91.3 KBCS

Sojourner Truth with Margaret Prescod brings you news and views on local, national, and international policies and stories that affect us all, and how communities are responding.  ....

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'The Disordered Cosmos', A Contemplation of the Exclusionary Culture of Physics


Chanda Prescod-Weinstein is an award-winning physicist,⁠ feminist, activist and the first Black woman to earn a PhD in the field of theoretical cosmology. Photo: Chanda Prescod-Weinstein
Every community guards a creation story, a theory of cosmic origins. In much of sub-Saharan West Africa, for the past few thousand years, itinerant storytellers known as griots have communicated these and other tales through song. Cosmologists also intone a theory of cosmic origins, known as the Big Bang, albeit through journal articles and math.
Chanda Prescod-Weinstein is a cosmologist who is adept with both equations and “the keeper of a deeply human impulse” to understand our universe. In her first book, ....

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A Black Physicist On The Freedom Of Dreaming In Equations


A Black Physicist On The Freedom Of Dreaming In Equations
Essence
2/18/2021
Chanda Prescod-Weinstein
This article, A Black Femme Dreams in Equations, originally appeared in the January/February issue of ESSENCE magazine, available on newsstands now.
I’m a Black feminist theoretical physicist who studies the origins of spacetime and dark matter; and I feel most at home scientifically with a Lagrangian. The Lagrangian is an equation tied to the most fundamental properties of a physical system. There are rules for how to extract information from a Lagrangian: What is the system’s future? What is its past? I can gather these pieces of information by calculating the equations of motion from the Lagrangian these tell us how the system evolves. I can also calculate the energy in a system. This is the Hamiltonian. Technically the Hamiltonian framework is an equivalent one to the Lagrangian, but I don’t feel as at home with it. ....

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