Collection of Science Jokes P2

In summary: Usually it's been commentated as being 'real'. Actually the joke dates back to the 30's and whether it's real or not cannot be said anymore.
  • #1,086
DennisN said:
and the evolution of the plastic/electronic species known as Mobile Phones
Your graphic omits early ancestors.
cellpics-0.jpg
 
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Physics news on Phys.org
  • #1,087
Kevin McHugh said:
The universe is made up of protons, neutrons, electrons and morons!
Just check out the flat earthers!
 
  • #1,088
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  • #1,090
I'll bite: that's not Godwin's law!
 
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  • #1,091
PS! The pigeon is just an attention getter and has nothing to do with it.
 
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  • #1,092
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  • #1,093
DrClaude said:
That's not a pigeon!
As expected - a mallardroit reply!
 
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  • #1,094
Ophiolite said:
As expected - a mallardroit reply!
Are you serious or is this a canard?
 
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  • #1,095
DrClaude said:
Are you serious or is this a canard?
If you don't mind I'll duck giving you a proper answer.

On a different topic, I just noticed a thread in the forum titled Looking for Good Books on Photosynthesis and I thought, that’s certainly something that worth shedding some light on.
 
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  • #1,096
What are you all arguing about? The mammal in the water in post #1,089?
 
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  • #1,097
You're all quackers.
 
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  • #1,098
Ophiolite said:
On a different topic, I just noticed a thread in the forum titled Looking for Good Books on Photosynthesis and I thought, that’s certainly something that worth shedding some light on.
Thanks for the link! When it comes to that topic, I'm a little green.
 
  • #1,099
This thread has gone to the birds. :oldeyes:
 
  • #1,100
241201


Technically it should go to the Electrical Engineering forum.
 
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  • #1,103
If you consider buying a decent telescope, the only black hole you will find is the new one in your wallet.

Edit: (I found a picture on the topic)

un-neutron-star-black-hole-my-hopes-dreams-4247038.png
 
Last edited:
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  • #1,104
I love it when human behavior can be expressed mathematically:

9128473600_n.jpg?_nc_cat=1&_nc_ht=scontent.fymq3-1.jpg
 
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  • #1,105
..so that he will be increasing the dosage? (if we forget about the intended derivative joke)
 
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  • #1,106
jack action said:
I love it when human behavior can be expressed mathematically [...]
Shouldn't there be an integral sign? I.e. ##\int\!e^x##
 
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  • #1,107
Magnum PI.jpg
 
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  • #1,108
I have many chemistry puns,
but I’m afraid they won’t get a good reaction
 
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  • #1,109
davenn said:
I have many chemistry puns,
but I’m afraid they won’t get a good reaction.
On the internet you need a :cat:-a-lyst.
 
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  • #1,111
8156630016_n.jpg?_nc_cat=1&_nc_ht=scontent.fymq3-1.jpg
 
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  • #1,112
RtIvNoNeG9-yLaP7MQTBzZ2XM5g&_nc_ht=scontent-syd2-1.jpg
 
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  • #1,113
43JqlW4-BFWcyWb3854CHWtswqA&_nc_ht=scontent-syd2-1.jpg
 
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  • #1,114
Dewey decimal? Do we ever!
 
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  • #1,115
7910858752_n.jpg?_nc_cat=1&_nc_ht=scontent.fymq3-1.jpg
 
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  • #1,116
5080883200_n.jpg?_nc_cat=1&_nc_ht=scontent.fymq3-1.jpg
 
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  • #1,117
The Great Unification Theory that unifies physics with electric engineering:
$$i=j$$
 
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  • #1,118
Application of the Great Unification Theory above to quantum mechanics. The probability current in quantum mechanics for a particle moving in one dimension is
$$j=\frac{\hbar}{2mi} \left( \psi^*\frac{\partial\psi}{\partial x}-\psi\frac{\partial\psi^*}{\partial x} \right)$$
Using the unification formula above, the current can be written in the electric engineering form
$$i=\frac{\hbar}{2mj} \left( \psi^*\frac{\partial\psi}{\partial x}-\psi\frac{\partial\psi^*}{\partial x} \right)$$
 
  • #1,119
Write it as $$i=\frac{\hbar}{2mi} \left( \psi^*\frac{\partial\psi}{\partial x}-\psi\frac{\partial\psi^*}{\partial x} \right)$$ and simplify: $$-1=\frac{\hbar}{2m} \left( \psi^*\frac{\partial\psi}{\partial x}-\psi\frac{\partial\psi^*}{\partial x} \right)$$
 
  • #1,120
mfb said:
$$-1=\frac{\hbar}{2m} \left( \psi^*\frac{\partial\psi}{\partial x}-\psi\frac{\partial\psi^*}{\partial x} \right)$$
The left-hand side is real and the right-hand side is imaginary, which is only possible if both sides are zero. Hence the wave function is real (which is compatible with the PBR theorem) and ##-1=0## (which makes sense because one cannot have less than zero particles).
 

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