Recent content by robphy

You may be interested in https://en.wikipedia.org/wiki/Moment_(mathematics) In the spirit of @wrobel 's first post, one could uncover a way to group a set of terms related by some property in terms of various mass-moments. Such a grouping could be useful for thinking about what is going on...

For an elastic collision, another way to get a system of two linear equations in two unknowns is to write the conservation equations in "gain-loss form", then recognize that the quadratic conservation of total kinetic-energy equation features "differences of squares" and that one can then...

These are accordion+drum covers by MayMae / JAVARA SLASH メイメイアコーディオン . #2,621 Battery (2024) Battery Metallica cover on Accordion 【蛇腹SLASH/Javara Slash】 &t=1m10s (2024)【METALLICA】One【蛇腹SLASH/JAVARA SLASH】 #542 Enter Sandman (=1050205&o=date']more Enter Sandman) (2025) Enter Sandman...

...also : #928, #2,238 (2026) Tom Morello and Friends - Killing in the Name (Power to the People Festival - Oct 3, 2026) - with his son Roman - (2026) a playlist of the Power to the People Festival - see also #2,629 "Jack Sabbath" (2026) Killing In the Name - EZ Band (Rage Against The...

#846 posted by you

MOISES OF PNEUMA STREET PERFORMER - THE BEST Jimi Hendrix cover I've ever seen "Foxy Lady" - NYC Street Performers https://en.wikipedia.org/wiki/Spanish_Castle_Magic https://en.wikipedia.org/wiki/Jimi_Hendrix NYC SP - PART 2!!! "Spanish Castle Magic" (Org. Jimi Hendrix) Moises of Pneuma -...

https://en.wikipedia.org/wiki/Mr._Crowley https://en.wikipedia.org/wiki/The_Wizard_(Black_Sabbath_song) https://en.wikipedia.org/wiki/War_Pigs https://en.wikipedia.org/wiki/Black_Sabbath (Mr Crowley #1,926) (The Wizard #2,191 #2,192) (War Pigs #489 , #1,834) (2026) "Jack Sabbath" (with Jack...

Erika VAN HALEN (likely no relation) posts (streaming live?) a tribute video to Eddie Van Halen around Oct 6 each year. (https://en.wikipedia.org/wiki/Eddie_Van_Halen died on Oct 6, 2020. ) (Nov 13, 2020) Cathedral /VAN HALEN,R.I.P (Oct 5, 2021) VANHALEN Stage solo cover part2 Japanese...

It looks like Halzen was already scheduled to be a plenary speaker at the upcoming AAPT meeting in New Orleans, before the Nobel prize was awarded. His biography on the AAPT website below doesn't mention the Nobel Prize. (Today's email from the AAPT announcing the meeting does mention the...

Paul Anka - My Way (The John Davidson Show, Aug 17, 1969) Frank Sinatra - My Way | Live from The Main Event at Madison Square Garden (1974) Elvis Presley - My Way (Aloha From Hawaii, Live in Honolulu, 1973) Sid Vicious - My Way (Original and Complete Version) - My Way: An...

https://en.wikipedia.org/wiki/Battery_(song) https://en.wikipedia.org/wiki/Metallica Metallica opening night at Sphere “Battery” intro starts &t=2m00s - song starts &t=2m45s - Metallica - Sphere - Master Of Puppets (Las Vegas, NV - October, 1 2026) - Metallica Sphere Tickets Are HOW Much...

https://en.wikipedia.org/wiki/Foxy_Lady (1967) https://en.wikipedia.org/wiki/Jimi_Hendrix#The_Jimi_Hendrix_Experience The Jimi Hendrix Experience - Foxey Lady (Miami Pop 1968) (2026) Billy F Gibbons of ZZ Top Story Tellers Foxy Lady at Arcada Theatre song starts at &t=3m10s (2010)...

https://en.wikipedia.org/wiki/All_Along_the_Watchtower (italic bolding mine)

#1,292 Cum_On_Feel_the_Noize https://en.wikipedia.org/wiki/Quiet_Riot Quiet Riot - Cum On Feel The Noize & Metal Health - Live @ US Festival '83 (29.05.1983) https://en.wikipedia.org/wiki/John_Torra https://www.youtube.com/@JohnTorraOfficial (2026) 23-year-old Long Islander the new...

I would say that a Minkowski diagram is drawn--not on a Euclidean plane--but on an affine plane (where there is a sense of parallelism, but no notion to compare the sizes of vectors in different directions [and thus no "dot-product"]).