**Philosophy**

Said Plato: “These things that we feel

Are not ontologically real,

But just the excresence

Of numinous essence

Our senses can never reveal.”

via Futility Closet

**Calculus**

The integral z-squared dz

From one to the cube root of 3

Times the cosine

Of three pi over nine

Is the log of the cube root of e.

via Scott Franklin

**Biology**

Planktonic cells are all alone;

More typically in biofilms grown.

Bacterial masses

Whose abundance surpasses

The weight of all elephants known.

via Brendan Niemira

**A prime number**

Two quintillion, seventy-seven

Quadrillion, three hundred eleven

Trillion, one billion,

Twenty-four million,

One thousand two hundred and seven.

via Andrew

**Topology**

The topological part of my brain

Finds Möbius strips quite a strain.

But I make you this pledge:

I’ll glue one at its edge

And build a real projective plane.

Feel free to contribute your own limericks in the comments, but please follow these guidelines:

- Keep it geeky.
- Keep it clean.

**Related posts**:

Euclid’s proof was sublime

He showed there’s no largest prime.

If there was? Well my word!

The results are absurd!

If it was prose it would rhyme.

Environmental microbial ecology:Planktonic cells are all alone;

More typically in biofilms grown.

Bacterial masses

Whose abundance surpasses

The weight of all elephants known.

A woman who loved a good fight

Would demand, as she argued all night,

Philosophical heft

From those on the left

And empirical proof from the right.

The background to this verse may be found here.

Biologists wash hands post loo,

As chemists beforehand will do.

Biochemists discern

The wider concern,

Washing prior as well as post too.

There once was a rhymer named Hugh,

Whose limericks stopped at line two.

There once was a poet named Dunn.

Just couldn’t help but complete the implied thought in context, could you?

Okay, this is the last clean and geeky contribution I can offer…

An electron that wouldn’t behave

Like a particle was called a “wave,”

By a physicist who

Had a problem or two

With some theories he just couldn’t save.

I didn’t make these up. I read them years ago in the bathroom of the berkeley physics building…

A friend who’s in liquor production

owns a still of astounding construction

the alcohol boils

through old magnet coils

he says that it’s proof by induction

Dear S prime i note with distress

that the length of your yardstick is less

and please wind your clock

to make it tick tock

more quickly your faithful friend S

What fun limericks! I post limericks several times a week, although most aren’t geeky.

Today I celebrated Tau Day with a limerick.

Thanks for the laughs!

I got this from the book “One Two Three Infinity..” by George Gamow.

There was a young girl named Miss. Bright.

Who could travel faster than light.

She departed one day

In an Einsteinian way

And came back the previous night.

I wrote this for a friend:

A mathematician named Nitu

tried to find all the groups of degree 2.

From much computation

He found with elation

The only example was Z_2.

These are GREAT limericks.

You have a golden eye for these verses.

Thank you for posting them!