Peter Coles
@telescoper.bsky.social
Theoretical astrophysicist specializing in the Universe and all that surrounds it. Based in Ireland. Personal account. Call me old-fashioned but I don't like fascists. He/him/his.
Blog: telescoper.blog
Blog: telescoper.blog
Why can’t you make a neutral pion from two photons?
A neutral pion can decay into two photons. It is therefore not unreasonable to ask the question whether the reverse process - the creation of a neutral pion by colliding two photons - is physically possible and, if not, why not? It is perhaps…
A neutral pion can decay into two photons. It is therefore not unreasonable to ask the question whether the reverse process - the creation of a neutral pion by colliding two photons - is physically possible and, if not, why not? It is perhaps…
Why can’t you make a neutral pion from two photons?
A neutral pion can decay into two photons. It is therefore not unreasonable to ask the question whether the reverse process - the creation of a neutral pion by colliding two photons - is physically possible and, if not, why not? It is perhaps less reasonable to ask an AI bot these questions. One of my colleagues did just that and found the following three answers to the "why not?" question: I particularly like the second one. Would anyone like to offer a correct explanation through the comments box?
telescoper.blog
November 10, 2025 at 9:17 PM
Why can’t you make a neutral pion from two photons?
A neutral pion can decay into two photons. It is therefore not unreasonable to ask the question whether the reverse process - the creation of a neutral pion by colliding two photons - is physically possible and, if not, why not? It is perhaps…
A neutral pion can decay into two photons. It is therefore not unreasonable to ask the question whether the reverse process - the creation of a neutral pion by colliding two photons - is physically possible and, if not, why not? It is perhaps…
Reposted by Peter Coles
Senior management at Lancaster University insist cuts of 1 in 4 jobs are “difficult but necessary”
This means “we messed up the finances & you’ll be paying for it”
www.lancasterguardian.co.uk/news/nationa...
This means “we messed up the finances & you’ll be paying for it”
www.lancasterguardian.co.uk/news/nationa...
Lancaster University industrial action begins Monday with 1 in 4 jobs set to be axed
Staff at Lancaster University will begin industrial action on Monday November 10 over management’s threat to axe one in four staff, the University and College Union (UCU) announced.
www.lancasterguardian.co.uk
November 10, 2025 at 8:26 AM
Senior management at Lancaster University insist cuts of 1 in 4 jobs are “difficult but necessary”
This means “we messed up the finances & you’ll be paying for it”
www.lancasterguardian.co.uk/news/nationa...
This means “we messed up the finances & you’ll be paying for it”
www.lancasterguardian.co.uk/news/nationa...
There seems to be a lot of interest in Solar Flares these days.
Personally, I never wear them.
Personally, I never wear them.
November 10, 2025 at 7:11 PM
There seems to be a lot of interest in Solar Flares these days.
Personally, I never wear them.
Personally, I never wear them.
The end of an era, to be sure.
President Michael D. Higgins has left Áras an Uachtaráin for the final time this evening, closing the chapter on 14 years in office.
Before departing, President Higgins was presented with flowers by a member of the Sanctuary Runners, of which he was a patron.
#VMNews
Before departing, President Higgins was presented with flowers by a member of the Sanctuary Runners, of which he was a patron.
#VMNews
November 10, 2025 at 7:07 PM
The end of an era, to be sure.
Reposted by Peter Coles
Sanctuary Runners lined the avenue as President Higgins left and presented him with two yellow roses representing friendship and joy.
The President is a patron of the running group, which brings locals and migrants together in communities around the country.
www.rte.ie/news/ireland...
The President is a patron of the running group, which brings locals and migrants together in communities around the country.
www.rte.ie/news/ireland...
President Higgins departs Áras an Uachtaráin
President Michael D Higgins has departed Áras an Uachtaráin as his term as President of Ireland comes to an end.
www.rte.ie
November 10, 2025 at 6:59 PM
Sanctuary Runners lined the avenue as President Higgins left and presented him with two yellow roses representing friendship and joy.
The President is a patron of the running group, which brings locals and migrants together in communities around the country.
www.rte.ie/news/ireland...
The President is a patron of the running group, which brings locals and migrants together in communities around the country.
www.rte.ie/news/ireland...
My employer has commenced the development of a "Competency Framework for Administrative, Professional and Support staff".
They would have been better off starting with Senior Management...
They would have been better off starting with Senior Management...
November 10, 2025 at 5:18 PM
My employer has commenced the development of a "Competency Framework for Administrative, Professional and Support staff".
They would have been better off starting with Senior Management...
They would have been better off starting with Senior Management...
Autumn Transition
I couldn't resist sharing this picture I took after lunch of a Norway Maple in St Joseph's Square on Maynooth University Campus. I like the gradual transitions of colour from green to yellow and orange and red with height. Most of the other trees have lost their leaves entirely.
I couldn't resist sharing this picture I took after lunch of a Norway Maple in St Joseph's Square on Maynooth University Campus. I like the gradual transitions of colour from green to yellow and orange and red with height. Most of the other trees have lost their leaves entirely.
Autumn Transition
I couldn't resist sharing this picture I took after lunch of a Norway Maple in St Joseph's Square on Maynooth University Campus. I like the gradual transitions of colour from green to yellow and orange and red with height. Most of the other trees have lost their leaves entirely.
telescoper.blog
November 10, 2025 at 3:25 PM
Autumn Transition
I couldn't resist sharing this picture I took after lunch of a Norway Maple in St Joseph's Square on Maynooth University Campus. I like the gradual transitions of colour from green to yellow and orange and red with height. Most of the other trees have lost their leaves entirely.
I couldn't resist sharing this picture I took after lunch of a Norway Maple in St Joseph's Square on Maynooth University Campus. I like the gradual transitions of colour from green to yellow and orange and red with height. Most of the other trees have lost their leaves entirely.
Beautiful autumn transition in a Norway Maple in St Joseph's Square at Maynooth University
November 10, 2025 at 1:15 PM
Beautiful autumn transition in a Norway Maple in St Joseph's Square at Maynooth University
Reposted by Peter Coles
My Lord General Monk did privately talk with the Duke about having the life-guards pass through the City today only for show and to fright people, for I perceive there are great fears abroad; for all which I am troubled and full of doubt that things will not go well.
November 10, 2025 at 9:28 AM
My Lord General Monk did privately talk with the Duke about having the life-guards pass through the City today only for show and to fright people, for I perceive there are great fears abroad; for all which I am troubled and full of doubt that things will not go well.
It's that time of year when the trickle of reference requests turns into a flood...
November 9, 2025 at 7:29 PM
It's that time of year when the trickle of reference requests turns into a flood...
Reposted by Peter Coles
FAI Cup final: Shamrock Rovers complete the double with victory over Cork City
FAI Cup final: Shamrock Rovers complete the double with victory over Cork City
Rory Gaffney scored twice in the second half against 10-man Cork City
www.irishtimes.com
November 9, 2025 at 5:13 PM
FAI Cup final: Shamrock Rovers complete the double with victory over Cork City
Unfortunate for Cork City's chances, but that's a totally justified straight red card.
#SHAvCOR #FAICupFinal
#SHAvCOR #FAICupFinal
November 9, 2025 at 3:47 PM
Unfortunate for Cork City's chances, but that's a totally justified straight red card.
#SHAvCOR #FAICupFinal
#SHAvCOR #FAICupFinal
Reposted by Peter Coles
Reposted every year in response to all those who fetishize remembrance
November 9, 2025 at 11:43 AM
Reposted every year in response to all those who fetishize remembrance
This afternoon I will mostly be watching the #FAICupFinal between Shamrock Rovers and Cork City.
November 9, 2025 at 1:05 PM
This afternoon I will mostly be watching the #FAICupFinal between Shamrock Rovers and Cork City.
Reposted by Peter Coles
Bertie Ahern quoted in the Irish times: "The problem with equality is that if you give it to one person, then everyone else comes looking for it."
November 9, 2025 at 8:33 AM
Bertie Ahern quoted in the Irish times: "The problem with equality is that if you give it to one person, then everyone else comes looking for it."
On the death of James Watson
So James Watson, a deeply unsavoury individual who co-won a Nobel Prize by stealing Rosalind Franklin’s ground breaking research on DNA, and was an unrepentant racist and misogynist, is dead. Lest it be forgotten, here is a collection of authentic quotes that give an…
So James Watson, a deeply unsavoury individual who co-won a Nobel Prize by stealing Rosalind Franklin’s ground breaking research on DNA, and was an unrepentant racist and misogynist, is dead. Lest it be forgotten, here is a collection of authentic quotes that give an…
On the death of James Watson
So James Watson, a deeply unsavoury individual who co-won a Nobel Prize by stealing Rosalind Franklin’s ground breaking research on DNA, and was an unrepentant racist and misogynist, is dead. Lest it be forgotten, here is a collection of authentic quotes that give an insight into his true character.
telescoper.blog
November 9, 2025 at 12:27 PM
On the death of James Watson
So James Watson, a deeply unsavoury individual who co-won a Nobel Prize by stealing Rosalind Franklin’s ground breaking research on DNA, and was an unrepentant racist and misogynist, is dead. Lest it be forgotten, here is a collection of authentic quotes that give an…
So James Watson, a deeply unsavoury individual who co-won a Nobel Prize by stealing Rosalind Franklin’s ground breaking research on DNA, and was an unrepentant racist and misogynist, is dead. Lest it be forgotten, here is a collection of authentic quotes that give an…
Reposted by Peter Coles
Ravel, Dressner and Beethoven at the National Concert Hall
This superb concert provided a great finish to a very tiring week. Thanks to the NCH for putting on such a great programme. As an added bonus, the rain had stopped by the time it was over so I didn't get drenched on my way home.
This superb concert provided a great finish to a very tiring week. Thanks to the NCH for putting on such a great programme. As an added bonus, the rain had stopped by the time it was over so I didn't get drenched on my way home.
Ravel, Dressner and Beethoven at the National Concert Hall
This superb concert provided a great finish to a very tiring week. Thanks to the NCH for putting on such a great programme. As an added bonus, the rain had stopped by the time it was over so I didn't get drenched on my way home.
telescoper.blog
November 8, 2025 at 6:29 PM
Ravel, Dressner and Beethoven at the National Concert Hall
This superb concert provided a great finish to a very tiring week. Thanks to the NCH for putting on such a great programme. As an added bonus, the rain had stopped by the time it was over so I didn't get drenched on my way home.
This superb concert provided a great finish to a very tiring week. Thanks to the NCH for putting on such a great programme. As an added bonus, the rain had stopped by the time it was over so I didn't get drenched on my way home.
Reposted by Peter Coles
A retired academic who believes he was victimised by Cardiff University says it would be unethical for the university to use his publications as part of its submission to be validated as an institution of research excellence ✍️ Martin Shipton
'Victimised' academic says Cardiff University should not use his work in research excellence submission
Martin Shipton A retired academic who believes he was victimised by Cardiff University says it would be unethical for the university to use his publications as part of its submission to be validated a...
wp.me
November 9, 2025 at 11:00 AM
A retired academic who believes he was victimised by Cardiff University says it would be unethical for the university to use his publications as part of its submission to be validated as an institution of research excellence ✍️ Martin Shipton
Reposted by Peter Coles
FFG le déanaí.
November 8, 2025 at 11:00 PM
FFG le déanaí.
Reposted by Peter Coles
#OtD 8 Nov 1926 Italian Marxist, Antonio Gramsci, was arrested by Mussolini's fascists during a crackdown on left-wing opposition in the country. Despite having parliamentary immunity, he was jailed, and eventually died in custody stories.workingclasshistory.com/article/1120...
November 8, 2025 at 11:25 PM
#OtD 8 Nov 1926 Italian Marxist, Antonio Gramsci, was arrested by Mussolini's fascists during a crackdown on left-wing opposition in the country. Despite having parliamentary immunity, he was jailed, and eventually died in custody stories.workingclasshistory.com/article/1120...
Reposted by Peter Coles
Reposted by Peter Coles
Thousands of homeless people will be able to open a bank account and five major banks as part of a strategy to improve financial inclusion.
Five major banks to allow homeless people to open bank accounts under new pilot
www.bigissue.com
November 8, 2025 at 9:05 AM
Thousands of homeless people will be able to open a bank account and five major banks as part of a strategy to improve financial inclusion.