Search
1000 results for “m_libretro”
-
M.C. Escher and CP Violation
I’ve had these pictures for quite a while and can’t remember where I got them from, but I used to show them in my lectures on Theoretical Particle Physics when I was in Nottingham to illustrate CP-violation and used them in this morning’s lecture at Maynooth.
The following picture by M.C. Escher is called Day and Night:
If you look at it you can see two kinds of symmetry emerging. One is a kind of reflection symmetry about a vertical axis drawn through the centre of the picture that applies to shapes but not to colour. The other is between black and white. But it is obvious that the picture doesn’t display these symmetries separately: to get a picture unchanged from the original you would have to do the mirror reflection and change black to white (and vice-versa).
The mirror reflection in the image can be taken to represent parity (P). Strictly speaking parity refers to a reflection through the origin in 3D rather than a mirror reflection, but it’s just for illustration. We know that a parity symmetry is violated in weak interactions just as it is in the picture.
The other possible symmetry, between black and white can be taken to represent charge-conjugation (C), the operation that converts particles into anti-particles and vice-versa.
While P is not an exact symmetry of weak interactions, it was long thought that the combination of C and P (CP) would be. Actually it isn’t. The story of the discovery of CP-violation is fascinating but I don’t have time to go into it here. It suffices to say that the Escher print also displays CP violation.
First lets do `C’, i.e. convert black to white and vice-versa. The result is:
Now reflect about the vertical mid-line to illustrate `P’:
If `CP’ were an exact symmetry then that image would be identical to the original, which I reproduce here:
You can see, however, that while some elements of the picture do look the same after this combined operation (e.g. the birds), others (e.g. the buildings at the bottom) do not. Although CP is not an exact symmetry of this picture, it is almost (just like it is in particle physics).
#CPViolation #DayAndNight #MCEscher #ParticlePhysics -
M.C. Escher and CP Violation
I’ve had these pictures for quite a while and can’t remember where I got them from, but I used to show them in my lectures on Theoretical Particle Physics when I was in Nottingham to illustrate CP-violation and used them in this morning’s lecture at Maynooth.
The following picture by M.C. Escher is called Day and Night:
If you look at it you can see two kinds of symmetry emerging. One is a kind of reflection symmetry about a vertical axis drawn through the centre of the picture that applies to shapes but not to colour. The other is between black and white. But it is obvious that the picture doesn’t display these symmetries separately: to get a picture unchanged from the original you would have to do the mirror reflection and change black to white (and vice-versa).
The mirror reflection in the image can be taken to represent parity (P). Strictly speaking parity refers to a reflection through the origin in 3D rather than a mirror reflection, but it’s just for illustration. We know that a parity symmetry is violated in weak interactions just as it is in the picture.
The other possible symmetry, between black and white can be taken to represent charge-conjugation (C), the operation that converts particles into anti-particles and vice-versa.
While P is not an exact symmetry of weak interactions, it was long thought that the combination of C and P (CP) would be. Actually it isn’t. The story of the discovery of CP-violation is fascinating but I don’t have time to go into it here. It suffices to say that the Escher print also displays CP violation.
First lets do `C’, i.e. convert black to white and vice-versa. The result is:
Now reflect about the vertical mid-line to illustrate `P’:
If `CP’ were an exact symmetry then that image would be identical to the original, which I reproduce here:
You can see, however, that while some elements of the picture do look the same after this combined operation (e.g. the birds), others (e.g. the buildings at the bottom) do not. Although CP is not an exact symmetry of this picture, it is almost (just like it is in particle physics).
#CPViolation #DayAndNight #MCEscher #ParticlePhysics -
M.C. Escher and CP Violation
I’ve had these pictures for quite a while and can’t remember where I got them from, but I used to show them in my lectures on Theoretical Particle Physics when I was in Nottingham to illustrate CP-violation and used them in this morning’s lecture at Maynooth.
The following picture by M.C. Escher is called Day and Night:
If you look at it you can see two kinds of symmetry emerging. One is a kind of reflection symmetry about a vertical axis drawn through the centre of the picture that applies to shapes but not to colour. The other is between black and white. But it is obvious that the picture doesn’t display these symmetries separately: to get a picture unchanged from the original you would have to do the mirror reflection and change black to white (and vice-versa).
The mirror reflection in the image can be taken to represent parity (P). Strictly speaking parity refers to a reflection through the origin in 3D rather than a mirror reflection, but it’s just for illustration. We know that a parity symmetry is violated in weak interactions just as it is in the picture.
The other possible symmetry, between black and white can be taken to represent charge-conjugation (C), the operation that converts particles into anti-particles and vice-versa.
While P is not an exact symmetry of weak interactions, it was long thought that the combination of C and P (CP) would be. Actually it isn’t. The story of the discovery of CP-violation is fascinating but I don’t have time to go into it here. It suffices to say that the Escher print also displays CP violation.
First lets do `C’, i.e. convert black to white and vice-versa. The result is:
Now reflect about the vertical mid-line to illustrate `P’:
If `CP’ were an exact symmetry then that image would be identical to the original, which I reproduce here:
You can see, however, that while some elements of the picture do look the same after this combined operation (e.g. the birds), others (e.g. the buildings at the bottom) do not. Although CP is not an exact symmetry of this picture, it is almost (just like it is in particle physics).
#CPViolation #DayAndNight #MCEscher #ParticlePhysics -
"security professionals now rank in the bottom three for overall workplace satisfaction alongside QA testers and infrastructure bods"
Ah, cyber security, QA, DevOps, all the unimportant, costly stuff. The triumvirate of project blockers. 😉
https://www.theregister.com/2026/04/27/from_a_massive_skills_gap/
-
"security professionals now rank in the bottom three for overall workplace satisfaction alongside QA testers and infrastructure bods"
Ah, cyber security, QA, DevOps, all the unimportant, costly stuff. The triumvirate of project blockers. 😉
https://www.theregister.com/2026/04/27/from_a_massive_skills_gap/
-
"security professionals now rank in the bottom three for overall workplace satisfaction alongside QA testers and infrastructure bods"
Ah, cyber security, QA, DevOps, all the unimportant, costly stuff. The triumvirate of project blockers. 😉
https://www.theregister.com/2026/04/27/from_a_massive_skills_gap/
-
Paul St-Pierre Plamondon: "Choisir d’avoir des enfants et de se dédier à sa famille n’est ni une expropriation du corps des femmes par le capitalisme, ni un projet obscur qui serait l’œuvre de «tradwives». C’est de se donner à la vie d’une autre personne et de les aimer inconditionnellement, la plus belle richesse que j’ai personnellement connue de toute ma vie. [...]" | nitter
https://nitter.net/PaulPlamondon/status/2048503652571304190#m -
David/Dovid Bashevkin: "Walk into nearly any Orthodox community on Shabbos and you’ll be immediately transported into a world you thought no longer exists. No phones. No TV. Kids playing with their neighbors. Parents sitting around talking. Some curmudgeon on the couch reading. It’s still the 90’s." | nitter
https://nitter.net/DBashIdeas/status/2048561390248468546#m -
@m_hundhausen und beim Gas / LNG werden die Kosten m.M.n. auch noch wesentlich höher ausfallen. Mit guten #EnerPHit Massnahmen sollte mehr einsparbar sein um mit einer R290 o. R600a Wärmepumpe effizient geringe Strommengen in Zukunft zu benötigen. So kann man u.a. auch den echten #UnplugGasReiche durchführen um #wegVomGas zukommen oder dem Erdöl, also dem #Fossil_Fuel_GoodBye zu sagen : cca-boolstore.com/products/goodbye-oil
um mit reinen klimafreundlicheren Erneuerbaren Energie zu heizen und auch bei Bedarf kühlen zu können.
Übrigens die #EnergieEffizenz ist entscheidend, auch um von fossil (PE) zzu
erneuerbar (PER) -
@m_hundhausen und beim Gas / LNG werden die Kosten m.M.n. auch noch wesentlich höher ausfallen. Mit guten #EnerPHit Massnahmen sollte mehr einsparbar sein um mit einer R290 o. R600a Wärmepumpe effizient geringe Strommengen in Zukunft zu benötigen. So kann man u.a. auch den echten #UnplugGasReiche durchführen um #wegVomGas zukommen oder dem Erdöl, also dem #Fossil_Fuel_GoodBye zu sagen : cca-boolstore.com/products/goodbye-oil
um mit reinen klimafreundlicheren Erneuerbaren Energie zu heizen und auch bei Bedarf kühlen zu können.
Übrigens die #EnergieEffizenz ist entscheidend, auch um von fossil (PE) zzu
erneuerbar (PER) -
@m_hundhausen und beim Gas / LNG werden die Kosten m.M.n. auch noch wesentlich höher ausfallen. Mit guten #EnerPHit Massnahmen sollte mehr einsparbar sein um mit einer R290 o. R600a Wärmepumpe effizient geringe Strommengen in Zukunft zu benötigen. So kann man u.a. auch den echten #UnplugGasReiche durchführen um #wegVomGas zukommen oder dem Erdöl, also dem #Fossil_Fuel_GoodBye zu sagen : cca-boolstore.com/products/goodbye-oil
um mit reinen klimafreundlicheren Erneuerbaren Energie zu heizen und auch bei Bedarf kühlen zu können.
Übrigens die #EnergieEffizenz ist entscheidend, auch um von fossil (PE) zzu
erneuerbar (PER) -
@m_hundhausen und beim Gas / LNG werden die Kosten m.M.n. auch noch wesentlich höher ausfallen. Mit guten #EnerPHit Massnahmen sollte mehr einsparbar sein um mit einer R290 o. R600a Wärmepumpe effizient geringe Strommengen in Zukunft zu benötigen. So kann man u.a. auch den echten #UnplugGasReiche durchführen um #wegVomGas zukommen oder dem Erdöl, also dem #Fossil_Fuel_GoodBye zu sagen : cca-boolstore.com/products/goodbye-oil
um mit reinen klimafreundlicheren Erneuerbaren Energie zu heizen und auch bei Bedarf kühlen zu können.
Übrigens die #EnergieEffizenz ist entscheidend, auch um von fossil (PE) zzu
erneuerbar (PER) -
@m_hundhausen und beim Gas / LNG werden die Kosten m.M.n. auch noch wesentlich höher ausfallen. Mit guten #EnerPHit Massnahmen sollte mehr einsparbar sein um mit einer R290 o. R600a Wärmepumpe effizient geringe Strommengen in Zukunft zu benötigen. So kann man u.a. auch den echten #UnplugGasReiche durchführen um #wegVomGas zukommen oder dem Erdöl, also dem #Fossil_Fuel_GoodBye zu sagen : cca-boolstore.com/products/goodbye-oil
um mit reinen klimafreundlicheren Erneuerbaren Energie zu heizen und auch bei Bedarf kühlen zu können.
Übrigens die #EnergieEffizenz ist entscheidend, auch um von fossil (PE) zzu
erneuerbar (PER) -
Matina Stevis-Gridneff (@MatinaStevis): "Canadian red tape is worse than Trump tariffs This is a valuable reality-check: industry leaders tell @IlyaGridneff @FT that there is a gap between what PM Mark Carney says & what's really happening on the ground, that's costing Canada $$$ https://giftarticle.ft.com/giftarticle/actions/redeem/07def50f-d16f-4674-a038-7a9cde8e2951" | nitter
(FT link apparently not working.)
https://nitter.net/MatinaStevis/status/2048467587080614250#m
-
M!LKの決意表明「アイドルパワー」リリース アイドルを応援するすべての人に贈る“きらめきソング”
https://www.oricon.co.jp/news/2451385/full/ -
M!LK、新曲「アイドルパワー」配信＆『CDTVライブ！ライブ！』でテレビ初披露へ
https://www.billboard-japan.com/d_news/detail/160883#billboardjapan #Billboard_JAPAN_音楽ニュース #ビルボードジャパン #Billboard_JAPAN #M_LK #チャート #音楽 #洋楽 #邦楽 #ミュージック #アーティスト #ランキング #ニュース
-
@M_el_viejo @PabloBzz @mina @Mariancatt31
Bueno, pero se dijo eso, que el objetivo había sido seleccionado por una IA.
Igual eso no quita responsabilidad ni legal ni política, en el supuesto caso de que los causantes de la masacre enfrentaran alguna vez las consecuencias, lo que lamentablemente dudo que pase...
-
M!LK佐野勇斗、故郷・愛知県に凱旋「最近出来たとんでもなく美味いハンバーガー屋に行ってきたよ」 地元グルメを満喫
https://www.oricon.co.jp/news/2451170/full/ -
Manchester Evening News: Number one for news, opinion, sport & celebrity news [Unofficial] @[email protected] ·M&S has shoppers drooling for new loaded desserts many are rushing to get hands on
-
Manchester Evening News: Number one for news, opinion, sport & celebrity news [Unofficial] @[email protected] ·M&S has shoppers drooling for new loaded desserts many are rushing to get hands on
-
Manchester Evening News: Number one for news, opinion, sport & celebrity news [Unofficial] @[email protected] ·
M&S boss says self-service tills leading 'good honest people' to shoplift
-
M·A·C人気リップグロス「スクワート」26年夏新色、透明ベース×虹色パールのパステルカラー6色
https://www.fashion-press.net/news/145738?media=line -
m!Byleth defending f!Shez from enemies, commissioned by Anonymous Vgen Client!
#commission #fanart #illustration #fireemblemWarriorsThreeHopes #fireemblem #mastoart #mastodonart
-
M!LK“グループイチの秀才”曽野舜太、出身大学名を告白 スタジオ驚き「神様どうなってるんだよ!」 小中時代の成績は“オール5”
https://www.oricon.co.jp/news/2450588/full/ -
"[M]utations can mean nothing, but they can also mean everything. While many mutations are inert, others cause harm. Still others bring hope, and could correct some of the body’s problems, science writer Roxanne Khamsi explains in Beyond Inheritance. The book draws on the latest research across multiple fields of science to show that mutations are with us throughout our lives, shaping our health and our lifespans."
https://www.sciencenews.org/article/beyond-inheritance-book-khamsi-mutation
-
"[M]utations can mean nothing, but they can also mean everything. While many mutations are inert, others cause harm. Still others bring hope, and could correct some of the body’s problems, science writer Roxanne Khamsi explains in Beyond Inheritance. The book draws on the latest research across multiple fields of science to show that mutations are with us throughout our lives, shaping our health and our lifespans."
https://www.sciencenews.org/article/beyond-inheritance-book-khamsi-mutation
-
"[M]utations can mean nothing, but they can also mean everything. While many mutations are inert, others cause harm. Still others bring hope, and could correct some of the body’s problems, science writer Roxanne Khamsi explains in Beyond Inheritance. The book draws on the latest research across multiple fields of science to show that mutations are with us throughout our lives, shaping our health and our lifespans."
https://www.sciencenews.org/article/beyond-inheritance-book-khamsi-mutation
-
"[M]utations can mean nothing, but they can also mean everything. While many mutations are inert, others cause harm. Still others bring hope, and could correct some of the body’s problems, science writer Roxanne Khamsi explains in Beyond Inheritance. The book draws on the latest research across multiple fields of science to show that mutations are with us throughout our lives, shaping our health and our lifespans."
https://www.sciencenews.org/article/beyond-inheritance-book-khamsi-mutation
-
"[M]utations can mean nothing, but they can also mean everything. While many mutations are inert, others cause harm. Still others bring hope, and could correct some of the body’s problems, science writer Roxanne Khamsi explains in Beyond Inheritance. The book draws on the latest research across multiple fields of science to show that mutations are with us throughout our lives, shaping our health and our lifespans."
https://www.sciencenews.org/article/beyond-inheritance-book-khamsi-mutation
-
#JenGerson: "The next six weeks are going to be rife with propaganda intended to weaken Canadian resolve. Carney is not above critique -- Canada hasn't handled everything perfectly or well. But the US doesn't mean us well, here. Maybe not "elbows up" but let's keep "eyes open."" | nitter
https://nitter.net/jengerson/status/2046999817973612831#m