Physics Poetry 2008
Below are a selection of poems (i.e 1) from the 2008 Poetry Night, and once we have another, the poems collected will be added to this page.
Physics Poetry 2007
Below are a selection of poems from the 2007 Poetry Night.
The Adventures of John the Electron
In a lab in amongst all the dials and the clocks
And the laser beams sat a mysterious box.
From here it just looks like a regular cube,
But inside you will see it’s a cathode ray tube.
In the CRT’s wi-re a current was flowing,
And John the Electron’s excitement was growing.
The electrons did play with that force they all shared
(k times q-one times q-two on r squared),
But all of them now only thought of their dream:
Leaving the wi-re and joining the beam.
You may think this life is a little bit vapid;
For them it’s like paddling a whitewater rapid.
John bounced off some charges and then he was free!
He yelled out in triumph and chortled with glee!
He zoomed through the vacuum and moved very fast,
Enjoying the moment; forgetting the past.
But ahead was a hurdle for this little caper:
A magnetic field pointed into the paper.
“Oh no!” said poor John. “It’s an end to my fun!
My free particle days are all dusted and done!
Look at my path and the field, if you please,
The angle between us is ninety degrees!
Then” (you should know) “an electromag quirk’ll
Consign me to move in a boring old circle.
I know I can’t always have freedom, of course,
But this’ll become a centripetal force!”1
1: The author confesses he’s not thought this through:
You need ten thousand teslas for this to be true.
The circular fate of poor Johnny was sealed
By his charge times his speed times the magnetic field.
If you make this the same as the force that you need
(That is m over r, times the square of the speed),
You can find what the size of John’s circle must be:
It’s one over q, over B, times mv.
It looked like John wouldn’t be able to cope,
But still he clinged onto one last final hope.
“If the magnetic region does not get much bigger,
It’s easily seen (and with excellent rigour)
My trajectory’s motion will not become bound,
For all it will do is just turn me around.”
John entered the field and he swung to the right,
Hoping and hoping with all of his might
That approaching the end of his half-revolution
He’d sense in the field any sharp diminution.
But a new pair of magnets was placed by the first:
Realising John’s fe-ars, the worst of the worst!
Any small fraction of lingering doubt
Was smashed when the CRT’s voltage went out.
The lives of electrons come with this great risk:
Tracing out a trajectory shaped like a disc.
The story to this point might look nice and neat,
But a rotating charge has to radiate heat.
Abraham published (along with Lorentz)
A formula making a good deal of sense.
I think that all people should find it concerning
That students will skip this – a gap in their learning.
One sixth a dot times q squared is what should be taught,
Times one on π c cubed times epsilon-nought.
The upshot of this was a deceleration.
(Though nothing did change to the time of rotation.
Now don’t look at me to correct and condemn,
The angular frequency’s qB on m.)
The spiral got small and though John did protest,
He kept slowing down and he finished at rest.
By David Barry
PDF format (Includes diagrams)
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