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etotheipiequals.bsky.social
Physicist. Durham University. Author of Opticsf2f.
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This week's Fourier Optics course features time-dependent optical phenomena: slow light & fast light. We exploit the variation of refractive index close to an atomic resonance. From Chapter 7 of #opticsf2f written with colleague @etotheipiequals.bsky.social 🧪 #physics ⚛️ #optics 💡 #iTeachPhysics 🎢

submitted 6 days ago • 1 comment

In this week’s Fourier Optics course we shall be looking at optical phenomena in the time domain. Rather than looking at monochromatic light diffracting at different angles, we consider different colours propagating along the optical axis. 🧪 #physics ⚛️ #optics 💡 #iTeachPhysics 🎢

submitted 12 days ago • 1 comment

Approaching the 2-year mark. The collection of articles is about 100 now, most of them detailed long-form articles If you're interested in Python, do have a look. I'm quite proud of the collection and it humbles me that so many read it regularly And it's free… www.thepythoncodingstack.com

submitted 19 days ago • 1 comment

‪In this week’s Fourier Optics course we shall be looking at one of the key concepts of Fourier optics – how a lens performs a Fourier transform. The importance of f to f is explained. 🧪 #physics ⚛️ #optics 💡 #iTeachPhysics 🎢

submitted 20 days ago • 1 comment

In this week’s Fourier Optics course we shall be looking at diffraction from 2D apertures. A quiz to test your understanding of the array theorem. Can you match the apertures to their Fraunhofer diffraction patterns? 🧪 #physics ⚛️ #optics 💡 #iTeachPhysics 🎢

submitted 27 days ago • 1 comment

In this week’s Fourier Optics course we shall be looking at diffraction. The central idea is: decompose an arbitrary light distribution in one plane into a sum of plane waves with Fourier transform to solve the Helmholtz equation for light propagation. 🧪 #physics ⚛️ #optics 💡 #iTeachPhysics 🎢

submitted 41 days ago • 4 comments

Have your @matplotlib.bsky.social plots ever looked a little fuzzy or low-res in @projectjupyter.bsky.social notebooks? Try configuring matplotlib for retina displays with this command 🧪 %config InlineBackend.figure_format = 'retina'

submitted 68 days ago • 2 comments

Have to admit that this is very cool. arxiv.org/abs/2412.13164 It's time to dump your quantum stocks and buy shares in companies that make mattresses or any other kinds of springs or pendulums! Harmonic oscillators are soon going to fly off the shelves like NVIDIA cards!

submitted 73 days ago • 1 comment

Knock ! Knock ! My first post "The choice of problems is the primary determinant of what one accomplishes in science" John J. Hopfield Nobel Prize lecture...

submitted 73 days ago • 3 comments

An amazing 7882 people have now filled in Democracy for Sale's survey about money in politics. Can we make it 8,000?? democracyforsale.co.uk/safeguard Thanks!

submitted 79 days ago • 4 comments

Why just one MOT when you can have two? In Chromium-Lithium lab 6Li and 53Cr are captured in Magneto Optical Traps (MOT). Both are fermionic isotopes, and they are combined to investigate the physics of #ultracold fermionic mixtures. More on #CrLi team: quantumgases.lens.unifi.it/exp/crli

submitted 92 days ago • 2 comments

Since Steven Strogatz now has a special chapter on the Kuramoto model, this seems like a good time to retweet my movie of 4 metronomes synchronizing! Pantaleone's derivation of the Kuramoto model from the mechanics of the system is here: pubs.aip.org/aapt/ajp/art...

submitted 105 days ago • 0 comments

Very much looking forward to the Rochester lecture later this month. #physics #optics 🧪💡

submitted 110 days ago • 2 comments

To keep below 1.5°C, with a 50-50 chance, would require global CO2 emissions to be zero in ~2038 (orange line). The other scenarios (blue) overshoot to ~1.6°C before going back <1.5°C in 2100 (& they start with a global carbon price in 2020). 1/

submitted 309 days ago • 2 comments