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MY'STORY

The MOVE Fire

This is a personal recollection on the Move fire on May 13, 1985 Philadelphia police fired thousands of rounds at the MOVE house, city officials approved dropping an explosive device on the roof, the resulting fire was allowed to burn, 11 people—including five children—died, and 61 homes were destroyed. Philadelphia City Council later called it a “brutal attack carried out by the City of Philadelphia on its own citizens” and acknowledged that no individual faced criminal consequences for the bombing. One timeline correction worth preserving for the BHP record: the major previous MOVE-police confrontation was August 8, 1978, about seven years before the bombing, not a year or two earlier. Officer James Ramp was killed, other police and firefighters were wounded, nine MOVE members were later convicted, and television cameras recorded police beating Delbert Africa during his arrest. The 1985 MOVE Commission later specifically criticized city planners for failing to adequately use lessons from that 1978 confrontation. And that actually strengthens the point you’re making: 1985 did not happen without precedent or institutional memory. There had already been a deadly confrontation with MOVE, years of conflict, negotiations and police involvement before Osage Avenue.

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BLACK FACTS
The Truths They Never Taught You...

Ruler of the Mali Empire in the 14th century

Mansa Musa was the ruler of the Mali Empire in West Africa. Details recorded here should be sourced; unknown information is left blank.

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BHP gathered finds from its connected research sources. Showing the 4 strongest Black History matches.
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Wikipedia

Meep (software)

Meep
Developersab initio research group, Massachusetts Institute of Technology
Release2006; 20 years ago (2006)
Stable release
1.34.0 / July 9, 2026; 3 months ago (2026-07-09)[1]
Written inC++, Python, Scheme
Operating systemLinux, macOS
TypeSimulation software
LicenseGNU General Public License
Websitemeep.readthedocs.io/en/latest/
Repositorygithub.com/NanoComp/meep

Meep (MIT Electromagnetic Equation Propagation) is a free and open-source[2] software package for electromagnetic simulations, developed by ab initio research group at Massachusetts Institute of Technology in 2006. Operating under Unix-like systems, it uses finite-difference time-domain method with perfectly matched layer or periodic boundary conditions for field computation.[3]

Meep supports dispersive, nonlinear and anisotropic media, and features subpixel smoothing and parallelization, as well as an embedded frequency-domain solver for steady-state fields and eigenmode expansion.[3] The package was subsequently expanded to include an adjoint solver for topology optimization and inverse design,[4] and a Python interface.[5]

The software is widely adopted by optics and photonics communities,[6] with applications including the analysis and design of metalenses[7][8] and photonic crystals.[9][10]

See also

[edit]

References

[edit]
  1. ^ "Release v1.34.0". GitHub. July 9, 2026. Retrieved 2026-09-23.
  2. ^ "Meep: License and Copyright". meep.readthedocs.io. Retrieved May 1, 2024.
  3. ^ a b Oskooi, Ardavan F.; Roundy, David; Ibanescu, Mihai; Bermel, Peter; Joannopoulos, J.D.; Johnson, Steven G. (March 2010). "Meep: A flexible free-software package for electromagnetic simulations by the FDTD method". Computer Physics Communications. 181 (3): 687–702. doi:10.1016/j.cpc.2009.11.008. hdl:1721.1/60946.
  4. ^ Hammond, Alec M.; Oskooi, Ardavan; Chen, Mo; Lin, Zin; Johnson, Steven G.; Ralph, Stephen E. (2022). "High-performance hybrid time/frequency-domain topology optimization for large-scale photonics inverse design". Optics Express. 30 (3): 4467–4491. doi:10.1364/OE.442074. hdl:1721.1/139804.
  5. ^ "Meep: FAQ". meep.readthedocs.io. Retrieved May 1, 2024.
  6. ^ McCoy, Dakota E.; Shneidman, Anna V.; Davis, Alexander L.; Aizenberg, Joanna (December 2021). "Finite-difference Time-domain (FDTD) Optical Simulations: A Primer for the Life Sciences and Bio-Inspired Engineering". Micron. 151 103160. doi:10.1016/j.micron.2021.103160.
  7. ^ Arbabi, Amir; Horie, Yu; Ball, Alexander J.; Bagheri, Mahmood; Faraon, Andrei (2015). "Subwavelength-thick lenses with high numerical apertures and large efficiency based on high-contrast transmitarrays". Nature Communications. 6: 7069. arXiv:1410.8261. doi:10.1038/ncomms8069. PMID 25947118.
  8. ^ Zhou, You; Zheng, Hanyu; Kravchenko, Ivan I.; Valentine, Jason (2020). "Flat optics for image differentiation". Nature Photonics. 14 (5): 316–323. doi:10.1038/s41566-020-0591-3. OSTI 1619041.
  9. ^ Goban, A.; Hung, C.-L.; Hood, J. D.; Yu, S.-P.; Muniz, J. A.; Painter, O.; Kimble, H. J. (August 2015). "Superradiance for Atoms Trapped along a Photonic Crystal Waveguide". Physical Review Letters. 115 (6) 063601. arXiv:1503.04503. doi:10.1103/PhysRevLett.115.063601. PMID 26296116.
  10. ^ Wu, Long-Hua; Hu, Xiao (June 2015). "Scheme for Achieving a Topological Photonic Crystal by Using Dielectric Material". Physical Review Letters. 114 (22) 223901. arXiv:1503.00416. doi:10.1103/PhysRevLett.114.223901. PMID 26196622.
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Wikipedia

Meep (software)

Meep (MIT Electromagnetic Equation Propagation) is a free and open-source software package for electromagnetic simulations, developed by ab initio research group at Massachusetts Institute of Technology in 2006. Operating under Unix-like systems, it uses finite-difference time-domain method with perfectly matched layer or periodic boundary conditions for field computation. Meep supports dispersive, nonlinear and anisotropic media, and features subpixel smoothing and parallelization, as well as an embedded frequency-domain solver for steady-state fields and eigenmode expansion. The package was subsequently expanded to include an adjoint solver for topology optimization and inverse design, and a Python interface. The software is widely adopted by optics and photonics communities, with applications including the analysis and design of metalenses and photonic crystals.

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Wikipedia

MPB (software)

MPB (MIT Photonic Bands) is a free and open-source software package for electromagnetic analysis of periodic structures with an emphasis on photonic crystals. It was developed by Steven G. Johnson and collaborators at ab initio research group at Massachusetts Institute of Technology in 1999. Operating under Unix-like systems and being scriptable in Python, it uses the frequency domain plane wave expansion method with block-iterative algorithms and Fast Fourier transform for modal analysis. The solver is able to analyze lossless and dispersionless anisotropic materials, including birefringent and gyrotropic media. MPB is widely used by band diagram analysis of photonic crystals by the photonics community, with uses in the studies on optical waveguides, photonic-crystal fibers, negative refraction and photonic topological insulators. The software also serves as a complimentary module to the general-purpose electromagnetic simulation software Meep, also developed by the ab initio research group.

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Wikipedia

Steven G. Johnson

Steven Glenn Johnson (born 1973) is an American applied mathematician and physicist known for being a co-creator of the FFTW library for software-based fast Fourier transforms and for his work on photonic crystals. He is professor of Applied Mathematics at MIT where he leads a group on Nanostructures and Computation. While working on his PhD at MIT, he developed the Fastest Fourier Transform in the West (FFTW) library with funding from the DoD NDSEG Fellowship. Steven Johnson and his colleague Matteo Frigo were awarded the 1999 J. H. Wilkinson Prize for Numerical Software for this work. He is the author of the NLOpt library for nonlinear optimization, as well as being the co-author of the open-source electromagnetic softwares Meep and MPB. He is a frequent contributor to the Julia programming language, and he has also contributed to Python, R, and Matlab. He was a keynote speaker for the 2019 JuliaCon conference.

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Wikipedia

List of free and open-source software packages

This is a list of free and open-source software (FOSS) packages, computer software licensed under free software licenses and open-source licenses. Software that fits the Free Software Definition may be more appropriately called free software; the GNU project in particular objects to their works being referred to as open-source. For more information about the philosophical background for open-source software, see free software movement and Open Source Initiative. However, nearly all software meeting the Free Software Definition also meets the Open Source Definition and vice versa. A small fraction of the software that meets either definition is listed here. Some of the open-source applications are also the basis of commercial products, shown in the List of commercial open-source applications and services.

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TOPIC OF THE DAY

Greenwood / Black Wall Street

Before the 1921 destruction of Tulsa’s Greenwood District, Black residents had created a remarkable center of business and community life. The district included stores, professional offices, entertainment venues and homes owned by Black citizens. Understanding Greenwood means learning what was built—not only what was burned.

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TRIVIA QUESTION OF THE DAY

Which Black woman became the first elected to the United States Congress?

Shirley Chisholm, elected in 1968.