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DrGreg's latest activity
DrGreg
replied to the thread
A
What does Dirac mean by "the suffixes would not balance"?
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The subtraction makes no sense. It's as if you are trying to subtract 3 cats from 5 dogs and don't understand why an answer of 2 is...
Today, 3:25 PM
DrGreg
replied to the thread
Collection of Lame Jokes
.
At least it didn't take you a degree.
Monday, 6:46 AM
DrGreg
reacted to
Ibix's post
in the thread
B
Do observers always agree on the number of waves in a beam of light?
with
Like
.
I said above that I'd reasoned about this intuitively - and as I said in @Herbascious J's last thread, Minkowski diagrams and learning...
Apr 20, 2024
DrGreg
replied to the thread
Collection of Science Jokes P2
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That reminds me of the case of "Prawo Jazdy", a person who was listed on the Irish police computer system as someone who had committed...
Apr 17, 2024
DrGreg
reacted to
jbriggs444's post
in the thread
Collection of Lame Jokes
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I am sure this has been posted at least once previously. Niklaus Wirth (creator of Pascal and structured programming maven) was...
Apr 15, 2024
DrGreg
replied to the thread
Collection of Lame Jokes
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Could be the basis for a new version of "rock paper scissors".
Apr 10, 2024
DrGreg
replied to the thread
Collection of Lame Jokes
.
That's easy for you to say...
Apr 7, 2024
DrGreg
replied to the thread
I
Relativity of Simultaneity and Length Contraction
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I agree, there is an inconsistency in the notation.
Apr 4, 2024
DrGreg
replied to the thread
I
Relativity of Simultaneity and Length Contraction
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I was brought up to use ##\sin^{-1}## etc. I think that might be a U.K. vs U.S. thing.
Apr 4, 2024
DrGreg
replied to the thread
Collection of Science Jokes P2
.
It never occurred to me until now that Einstein proved that a grade of ##c##+ is impossible, and as for the programming language ##c##++...
Mar 31, 2024
DrGreg
replied to the thread
I
Dirac comment on covariant derivatives
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And, of course, it's not just the spatial coordinates that you need to consider, it also applies to non-inertial coordinates such as...
Mar 30, 2024
DrGreg
replied to the thread
Collection of Lame Jokes
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An electronic version of the same piece, by the Japanese electronic music pioneer Isao Tomita.
Mar 24, 2024
DrGreg
replied to the thread
Random Thoughts 7
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Try imagining sheep. That might work better! :smile:
Mar 22, 2024
DrGreg
reacted to
phinds's post
in the thread
Collection of Lame Jokes
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Like
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Jokes don't require proper spelling. That's a well known, longstanding rule that I just made up.
Mar 21, 2024
DrGreg
replied to the thread
Collection of Lame Jokes
.
I didn't know Complan was a verb!
Mar 21, 2024
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