Joseph Miller’s Post

This is Vantablack. ⚫ The darkest material in the world. It absorbs 99.965% of light, making anything coated with it look... well, invisible. 🫠 In the first image, you see a bust on the right, and on the left, nothing. BUT THAT'S NOT NOTHING! 📍That’s the same bust coated in Vantablack. It’s so dark, it removes all depth and texture, making 3D objects look like flat, black voids. Vantablack isn’t just cool to look at. It’s used in high-tech industries, like reducing glare in telescopes and cameras. It’s also used in thermal imaging and even space exploration! Imagine walking into a room painted entirely in Vantablack. 😃 It would feel like stepping into a black hole! ⛳ What would you coat with Vantablack if you could? Let me know in the comments. #Technology #Innovation #physics

Check out our new paper "Keypoint-based Stereophotoclinometry for Characterizing and Navigating Small Bodies: A Factor Graph Approach" to be presented at the 2024 AIAA SciTech Forum in January: https://lnkd.in/eiuTuFkb. In this paper, we propose an alternative to the state-of-the-practice method for small body surface reconstruction, i.e., stereophotoclinometry (SPC). Our proposed approach incorporates surface reflectance models into a (dense) feature-based Structure-from-Motion (SfM) to simultaneously estimate the surface normal and albedo at detected landmarks. We demonstrate close alignment to a baseline SPC solution while operating autonomously and without relying on high-fidelity a priori data. Huge thanks to my coauthors Andrew Vaughan, Yang Cheng, Adnan Ansar, John Christian, and Panagiotis Tsiotras! #space #spacetechnology #sfm #scitech #deeplearning

FIMMWAVE supports a variety of mode solvers. Each mode solver in FIMMWAVE is designed and optimized for solving specific types of waveguide geometries.💡 🔷 The FMM Solver - FMM, a fully vectorial solver, is the best solution for waveguide structures with a rectangular geometry based on the Film Mode Matching Method. 🔷 The FDM Solver - FDM solver, based on an advanced Finite Difference algorithm, is suitable for metallic or absorbing structures. 🔷 The FEM Solver - FEM is a fast and reliable mode solver based on the Finite Element Method, perfect for complex waveguide geometries, especially with curved interfaces. 🔷 Fibre Solvers - FIMMWAVE offers a variety of Fibre Solvers for calculating the modes of arbitrary cylindrical geometries, single-mode or multi-mode fibres, including step-index and graded-index profiles, and even metallic fibers. 🔷 The Effective Index Solver - Based on the Effective Index Approximation, it is a fast and robust mode solver for quasi-2D structures and ideal for a quick validation of structure. Learn more: https://ed.gr/dwgx8 #photons #physics #light #science #anycubic #astronomy #photon #universe #quantumphysics #dprinting #quantummechanics #d #photography #energy #quantum #sun #astrophysics #l #space #physicist #particles #resin #dprint #Warhammer #k #blackhole #physicsfun #einstein #nasa #fimmwave #waveguides

#digitalimaging #computervision: The story behind our chromatic distortion model. We were working on the high speed 3D industrial scanner application We already had a good target extraction, accurate at a few hundreds of pixel, and we could therefore start looking at errors smaller than a pixel. The leftmost graphic uses the average of red green and blue target extractions as reference, and plots the amplified deviation (50x) of Red Green or Blue w.r. to the average... its a trick from CAD, amplify the behavior to start getting an explanation. What is obvious is the radial spread of targets w.r. to color, we were looking at a problem in polar coordinates. Plotting individual colors w.r. from image center yielded 3 graphs, where I show only 2. Green is in the order of 10e-5 pixels... not significant with the target accuracy we have. It makes sense as Green is the center of the visible spectrum. The remaining 2 curves for Blue and Red were first modeled with 3 parameters, a standard polynomial fit, as any undergrad would do it. Only it was wrong... the curve has only 2 parameters. We needed to understand the physics underneath to model this. And its going to be one of our next patents. We know the model works as it also predicts the distortion of a zooming lens, and was found on a fixed lens camera... So if color accuracy is an issue on your application, I can help We are more accurate than NASA from COTS

FIMMWAVE supports a variety of mode solvers. Each mode solver in FIMMWAVE is designed and optimized for solving specific types of waveguide geometries.💡 🔷 The FMM Solver - FMM, a fully vectorial solver, is the best solution for waveguide structures with a rectangular geometry based on the Film Mode Matching Method. 🔷 The FDM Solver - FDM solver, based on an advanced Finite Difference algorithm, is suitable for metallic or absorbing structures. 🔷 The FEM Solver - FEM is a fast and reliable mode solver based on the Finite Element Method, perfect for complex waveguide geometries, especially with curved interfaces. 🔷 Fibre Solvers - FIMMWAVE offers a variety of Fibre Solvers for calculating the modes of arbitrary cylindrical geometries, single-mode or multi-mode fibres, including step-index and graded-index profiles, and even metallic fibers. 🔷 The Effective Index Solver - Based on the Effective Index Approximation, it is a fast and robust mode solver for quasi-2D structures and ideal for a quick validation of structure. Learn more: https://ed.gr/dwgx8 #photons #physics #light #science #anycubic #astronomy #photon #universe #quantumphysics #dprinting #quantummechanics #d #photography #energy #quantum #sun #astrophysics #l #space #physicist #particles #resin #dprint #Warhammer #k #blackhole #physicsfun #einstein #nasa #fimmwave #waveguides

FIMMWAVE supports a variety of mode solvers. Each mode solver in FIMMWAVE is designed and optimized for solving specific types of waveguide geometries.💡 🔷 The FMM Solver - FMM, a fully vectorial solver, is the best solution for waveguide structures with a rectangular geometry based on the Film Mode Matching Method. 🔷 The FDM Solver - FDM solver, based on an advanced Finite Difference algorithm, is suitable for metallic or absorbing structures. 🔷 The FEM Solver - FEM is a fast and reliable mode solver based on the Finite Element Method, perfect for complex waveguide geometries, especially with curved interfaces. 🔷 Fibre Solvers - FIMMWAVE offers a variety of Fibre Solvers for calculating the modes of arbitrary cylindrical geometries, single-mode or multi-mode fibres, including step-index and graded-index profiles, and even metallic fibers. 🔷 The Effective Index Solver - Based on the Effective Index Approximation, it is a fast and robust mode solver for quasi-2D structures and ideal for a quick validation of structure. Learn more: https://ed.gr/dwgx8 #photons #physics #light #science #anycubic #astronomy #photon #universe #quantumphysics #dprinting #quantummechanics #d #photography #energy #quantum #sun #astrophysics #l #space #physicist #particles #resin #dprint #Warhammer #k #blackhole #physicsfun #einstein #nasa #fimmwave #waveguides

FIMMWAVE supports a variety of mode solvers. Each mode solver in FIMMWAVE is designed and optimized for solving specific types of waveguide geometries.💡 🔷 The FMM Solver - FMM, a fully vectorial solver, is the best solution for waveguide structures with a rectangular geometry based on the Film Mode Matching Method. 🔷 The FDM Solver - FDM solver, based on an advanced Finite Difference algorithm, is suitable for metallic or absorbing structures. 🔷 The FEM Solver - FEM is a fast and reliable mode solver based on the Finite Element Method, perfect for complex waveguide geometries, especially with curved interfaces. 🔷 Fibre Solvers - FIMMWAVE offers a variety of Fibre Solvers for calculating the modes of arbitrary cylindrical geometries, single-mode or multi-mode fibres, including step-index and graded-index profiles, and even metallic fibers. 🔷 The Effective Index Solver - Based on the Effective Index Approximation, it is a fast and robust mode solver for quasi-2D structures and ideal for a quick validation of structure. Learn more: https://ed.gr/dwgx8 #photons #physics #light #science #anycubic #astronomy #photon #universe #quantumphysics #dprinting #quantummechanics #d #photography #energy #quantum #sun #astrophysics #l #space #physicist #particles #resin #dprint #Warhammer #k #blackhole #physicsfun #einstein #nasa #fimmwave #waveguides

FIMMWAVE supports a variety of mode solvers. Each mode solver in FIMMWAVE is designed and optimized for solving specific types of waveguide geometries.💡 🔷 The FMM Solver - FMM, a fully vectorial solver, is the best solution for waveguide structures with a rectangular geometry based on the Film Mode Matching Method. 🔷 The FDM Solver - FDM solver, based on an advanced Finite Difference algorithm, is suitable for metallic or absorbing structures. 🔷 The FEM Solver - FEM is a fast and reliable mode solver based on the Finite Element Method, perfect for complex waveguide geometries, especially with curved interfaces. 🔷 Fibre Solvers - FIMMWAVE offers a variety of Fibre Solvers for calculating the modes of arbitrary cylindrical geometries, single-mode or multi-mode fibres, including step-index and graded-index profiles, and even metallic fibers. 🔷 The Effective Index Solver - Based on the Effective Index Approximation, it is a fast and robust mode solver for quasi-2D structures and ideal for a quick validation of structure. Learn more: https://ed.gr/dwgx8 #photons #physics #light #science #anycubic #astronomy #photon #universe #quantumphysics #dprinting #quantummechanics #d #photography #energy #quantum #sun #astrophysics #l #space #physicist #particles #resin #dprint #Warhammer #k #blackhole #physicsfun #einstein #nasa #fimmwave #waveguides

FIMMWAVE supports a variety of mode solvers. Each mode solver in FIMMWAVE is designed and optimized for solving specific types of waveguide geometries.💡 🔷 The FMM Solver - FMM, a fully vectorial solver, is the best solution for waveguide structures with a rectangular geometry based on the Film Mode Matching Method. 🔷 The FDM Solver - FDM solver, based on an advanced Finite Difference algorithm, is suitable for metallic or absorbing structures. 🔷 The FEM Solver - FEM is a fast and reliable mode solver based on the Finite Element Method, perfect for complex waveguide geometries, especially with curved interfaces. 🔷 Fibre Solvers - FIMMWAVE offers a variety of Fibre Solvers for calculating the modes of arbitrary cylindrical geometries, single-mode or multi-mode fibres, including step-index and graded-index profiles, and even metallic fibers. 🔷 The Effective Index Solver - Based on the Effective Index Approximation, it is a fast and robust mode solver for quasi-2D structures and ideal for a quick validation of structure. Learn more: https://ed.gr/dxbyx #photons #physics #light #science #anycubic #astronomy #photon #universe #quantumphysics #dprinting #quantummechanics #d #photography #energy #quantum #sun #astrophysics #l #space #physicist #particles #resin #dprint #Warhammer #k #blackhole #physicsfun #einstein #nasa #fimmwave #waveguides

🥼🔬Science Task 🥼🔬 3-5: Homemade Telescope or Microscope: Build simple telescopes using lenses or microscopes using water droplets. Students can explore the basics of optics and magnification, looking at distant objects or small details of everyday items. #cesa3 #empoweringeducators