Gravity and Levity

Giaconda by Rene Magritte, 1953

For Poetry Friday, over at Poem Farm, I'm posting another of my physics poems in the newly published Guys Read: True Stories, edited by Jon Scieszka (cover art below). It's titled Gravity, speaking of which I have a question. In Magritte's painting, Giaconda, are the bowlerized men falling, rising, or perhaps merely floating? Maybe they're turning in space, as they face different directions.

Gravity

The opposite of levity

Supposedly is gravity.

For levity means "lightness, mirth,"

While gravity means "down to earth."

And if it simply 

Wasn't there,

We'd float like blimps

Up in the air.

And though it's great,

I think, to fly,

The birds might hate

To share the sky.

And with your head 

Below your feet,

It might be difficult to eat.

To see your food float out of sight

Would surely hurt your appetite.

I'll bet your sleep

Inside a cloud

Would not be deep

When things got loud.

For thunderclaps

Would hurt your head

While you were sleeping

In your bed.

Let's stick with gravity instead.