everexpanding

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"Science can flourish only in an atmosphere of free speech." — Albert Einstein

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npub1e8wv6halzds9g9w7k09q86g4fnthqq8nlvwesds7tndyah8qpkdqxqa29a

NIP-05 Address

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nprofile1qqsvnhxdt7l3xcz5zh0t8jsray25e4msqrelk8vcxc09ekjwmnsqmxspzemhxue69uhkzarvv9ejumn0wd68ytnvv9hxgqg5waehxw309aex2mrp0yhxgctdw4eju6t0qyxhwumn8ghj7mn0wvhxcmmvhchdug

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atlas.nostr.land

relay.damus.io

nos.lol

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npub1e8wv6halzds9g9w7k09q86g4fnthqq8nlvwesds7tndyah8qpkdqxqa29a

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Last Notes

2023-12-03 14:27:14 UTC

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https://youtu.be/Cz4Q4QOuoo8

2023-11-03 05:50:13 UTC

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https://youtu.be/czjisEGe5Cw

2023-11-02 06:07:50 UTC

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The upcoming LISA gravitational wave detector is expected to observe a phenomenon known as extreme mass ratio inspirals (EMRIs), in which small black holes spiral into supermassive ones at the centre of galaxies. These interactions produce gravitational waves, which LISA will detect in a different frequency range to ground-based detectors such as LIGO. Scientists expect LISA to observe a 'rain' of these events. There could be tens or even hundreds of events during the mission. In scenarios where two supermassive black holes interact in galactic mergers, thousands of EMRI events could occur, with a few hundred detectable by LISA. This expected flood of observations could shed light on black hole masses and galaxy properties, possibly confirming the presence of multiple supermassive black holes in certain galaxies and correlating these events with post-starburst galaxy properties. Identifying and studying these EMRIs could provide important insights into the dynamics and evolution of black holes within galaxies.
https://skyandtelescope.org/astronomy-blogs/black-hole-files/black-hole-rain/

2023-11-01 00:14:32 UTC

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The LIGO Scientific Collaboration has developed and implemented a new method, called frequency-dependent squeezing, to significantly reduce quantum noise in gravitational wave detectors. By manipulating quantum fluctuations using this advanced technique, they have extended the range of detectable gravitational wave frequencies, increasing the volume of the universe that can be probed by up to 65%. This improvement allows the detection of more black hole and neutron star mergers, providing clearer signals for studying phenomena such as orbital precession, eccentricity and possible deviations from general relativity. The method, which involves tailor-made squeezing at different frequencies, marks a remarkable advance in quantum state manipulation and paves the way for future, more sensitive gravitational wave detectors.
https://physics.aps.org/articles/v16/189

2023-11-01 00:01:51 UTC

A simple, accessible introduction to calculus by Silvanus P. Thompson (Calculus Made Easy, 1910)
https://image.nostr.build/15773a1b9ae95728aa6be056cf5ac782cea8a74b2a09afe798473ba76aa0f549.png
https://calculusmadeeasy.org/

2023-10-30 13:37:38 UTC

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https://www.sciencenews.org/article/antimatter-falls-down-matter-einsteins-gravity

2023-10-28 01:56:16 UTC

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https://www.sciencenews.org/article/tiny-accelerators-electrons-lasers
Physicists have developed miniature particle accelerators the size of a coin that use lasers to accelerate and control electron beams. Although less powerful than their larger counterparts such as the LHC, these compact accelerators show promise for medical applications such as cancer treatment and technological advances such as quantum computing. Despite limitations in power and efficiency, these innovations represent a significant step towards miniaturising powerful technologies with transformative potential for various fields in the future.

2023-10-27 23:21:54 UTC

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https://bigthink.com/starts-with-a-bang/light-gravitational-waves-arrive/

2023-10-03 17:50:24 UTC

It's amazing to think that 1 attosecond is to 1 second what 1 second is to the age of the universe
https://image.nostr.build/1aeb60c8d7208765a97e2f083c5ac793c11aa41e04cd370b304ae3eefa0c9e83.jpg

2023-10-03 17:11:35 UTC

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Agostini, Krausz, and L’Huillier win the 2023 Nobel Prize in Physics
https://www.nobelprize.org/prizes/physics/2023/press-release/
They have been awarded "for experimental methods that generate attosecond pulses of light for the study of electron dynamics in matter.”

2023-09-03 18:25:48 UTC

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3blue1brown: Fundamentals Of Light - Barber Pole Effect
https://youtu.be/aXRTczANuIs
A great video that explains the classical view of light and gives an intuition for it.

2023-08-28 18:42:41 UTC

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xkcd: Inspiration
https://imgs.xkcd.com/comics/inspiration.png

2023-08-20 15:53:44 UTC

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Muon g-2 doubles down with latest measurement, explores uncharted territory
https://news.fnal.gov/2023/08/muon-g-2-doubles-down-with-latest-measurement/
Fermilab's Muon g-2 experiment brings particle physics closer to a showdown between theory and experiment.

2023-06-29 01:18:30 UTC

https://bigthink.com/starts-with-a-bang/spacetime-rippling-gravitational-waves/

2023-05-21 13:36:11 UTC

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The laws of gravity do not theoretically prohibit digging a hole through the Earth's centre. Gravity is just a force that pulls objects to the centre of mass.

2023-05-21 10:50:12 UTC

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Thanks for the shoutout 😊 I'm very happy to know that you like my articles.
I try to write my articles in such a way that they're clear, but not oversimplified, and still concise and showing the actual maths in it.

2023-05-18 07:29:01 UTC

https://www.symmetrymagazine.org/article/searching-for-the-matter-that-hides-its-shine

2023-05-18 06:47:10 UTC

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GM ☕ 🌞 I didn't know that 😅

2023-05-15 20:01:05 UTC

https://physics.aps.org/articles/v16/80

2023-05-14 09:59:54 UTC

Just published the written version of a talk I gave about 'Laser Cooling and Trapping of Neutral Atoms' on habla.
https://habla.news/a/naddr1qqxnzd3cxscr2desxc6rvwf4qys8wumn8ghj7mn0wd68ytn9d9h82mny0fmkzmn6d9njuumsv93k2tcppemhxue69uhkummn9ekx7mp0qyg8wumn8ghj7mn0wd68ytnddakj7qgjwaehxw309ahx7um5wgerztnrdakj7qg4waehxw309aex2mrp0yhxgctdw4eju6t09upzpjwue40m7ymq2s2aav72q0532nxhwqq087canqmpuhx6fmwwqrv6qvzqqqr4gud28lg7
#lasercooling #trapping #ultracoldatoms #atomicphysics #physics

2023-05-14 05:30:54 UTC

https://physics.aps.org/articles/v16/s58

2023-05-13 05:21:33 UTC

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GM ☕ 🤙

2023-05-11 22:46:54 UTC

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Thank you very much 😊
There are much more beautiful properties of EC one could write about.

2023-05-11 11:41:54 UTC

I just published a new post on "Elliptic Curves".
Elliptic curves are smooth plane curves defined by cubic polynomials with no repeated roots, and have applications in cryptography, error-correcting codes, and number theory. The group law on elliptic curves allows efficient computation of points and forms the basis of cryptographic algorithms such as Elliptic Curve Cryptography (ECC). Understanding the properties and applications of elliptic curves contributes to a deeper understanding of algebraic structures and opens up avenues for practical and theoretical research.
https://habla.news/a/naddr1qqxnzd3cxvurqdpjxs6nsv3eqys8wumn8ghj7mn0wd68ytn9d9h82mny0fmkzmn6d9njuumsv93k2tcpzpmhxue69uhkummnw3ezumt0d5hszrnhwden5te0dehhxtnvdakz7qg5waehxw309aex2mrp09skymr99ehhyee0qywhwumn8ghj7mn0wd68ytnzd96xxmmfdejhytnnda3kjctv9upzpjwue40m7ymq2s2aav72q0532nxhwqq087canqmpuhx6fmwwqrv6qvzqqqr4gurnx63h

2023-05-05 06:03:19 UTC

'Many sciences have not developed this far, and the situation is the way it was in the early days of physics, when there was a lot of arguing because there were not so many observations. I bring this up because it is interesting that human relationships, if there is an independent way of judging truth, can become unargumentative.'
— R.P. Feynman in 'The Meaning of It All'

2023-05-04 11:53:07 UTC

Spacetime: is it real and physical, or just a calculational tool?
https://bigthink.com/starts-with-a-bang/spacetime-real-physical-calculational/

2023-05-03 14:37:11 UTC

https://physicsworld.com/a/physicists-want-to-build-a-next-generation-atom-interferometer-at-cern/

2023-04-23 23:54:30 UTC

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I fully agree that NIP-05 addresses are generally incapable of providing verification and are particularly useful for identity sharing. However, in a few cases I think that NIP-05 addresses do provide some kind of verification. This applies to well-known domains or domains of well-known companies. For example, I would consider the NIP-05 address "saylor@microstrategy.com" for Michael Saylor as a verification that it's really Michael Saylor and not someone else.
I also think that clients should refrain from displaying NIP-05 with a "check". Yet I don't think clients should stop showing it on a feed. For example, if I follow two accounts with the same name and a very similar or even the same profile picture. How do I know who is who? I could easily tell by looking at the NIP-05 address as it is unique and more memorable than npubs.

2023-04-20 18:00:28 UTC

The legendary opening of "States of Matter" by David L. Goodstein.
https://nostr.build/i/nostr.build_9fbbf0af0b799c8808a64863d55c9012bc60da8b3d5d73cf5de41e56ef260326.png

2023-04-16 00:43:05 UTC

"Helicity and Chirality"
https://habla.news/a/naddr1qqxnzd3cxymrqdfsxumrvd3eqys8wumn8ghj7mn0wd68ytn9d9h82mny0fmkzmn6d9njuumsv93k2tcppemhxue69uhkummn9ekx7mp0qy2hwumn8ghj7un9d3shjtnyv9kh2uewd9hj7qglwaehxw309ahx7um5wgkhyetvv9ujumn0ddhhgctjduhxxmmd9uq3xamnwvaz7tm0venxx6rpd9hzuur4vghsygxfmnx4l0cnvp2pth4negp7j92v6acqpulmrkvrv8jumf8decqdngpsgqqqw4rs5h2037
#physics #helicity #chirality #spin #neutrinos

2023-04-12 23:39:44 UTC

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Thank you 💜 🙏 🤙 #plebchain

2023-04-12 00:59:00 UTC

"The Feynman Technique"
The Feynman Technique, named after the physicist Richard P. Feynman, is a powerful learning framework for developing a deep understanding of concepts. You iterate and simplify your explanations to the point where a child can understand them.
https://habla.news/a/naddr1qqxnzd3cxyervvpnxccnzwp5qy88wumn8ghj7mn0wvhxcmmv9uq3wamnwvaz7tmjv4kxz7fwdehhxarj9e3xzmny9uqjqamnwvaz7tmwdaehgu3wv45kuatwv3a8wctw0f5kwtnnwpskxef0qyfhwumn8ghj7mmxve3ksctfdch8qatz9uq32amnwvaz7tmjv4kxz7fwv3sk6atn9e5k7tczyryaen2lhufkq4q4m6eu5qlfz4xdwuqq70a3mxpkrewd5nkuuqxe5qcyqqq823cgfy0ld

2023-04-11 19:25:40 UTC

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thank you 😃

2023-04-11 09:26:12 UTC

I made my first post on habla.
https://habla.news/a/naddr1qqxnzd3cxyerqvecxccnzdejqy08wumn8ghj7mn0wd68yttsw43zuam9d3kx7unyv4ezumn9wshszrnhwden5te0dehhxtnvdakz7qfqwaehxw309ahx7um5wghx26tww4hxg7nhv9h856t89eehqctrv5hsz9mhwden5te0wfjkccte9ehx7um5wghxyctwvshszymhwden5te0danxvcmgv95kutnsw43z7q3qe8wv6halzds9g9w7k09q86g4fnthqq8nlvwesds7tndyah8qpkdqxpqqqp65wcjwtg4