1. Most importantly, the Beat poem is written to a rhythm that exists outside the poem. To illustrate, you can read this to a metronome-like beat:
I think I'm going somewhere
mountainous or scaly
a mountainous or scaly place
that's where I think I'll go.
When I find the time: when I find the time.
But this version contains the beat within the language. It needs no external beat.
I think that I will go
somewhere where there's mountains
roaming the distance and sweeping the land
where time no longer threatens
lost outside revolving hands
You get the idea.
2. Beat poetry has the sense of being spoken in the moment.
3. True to its philosophy of being-in-the-moment, Beat poetry never stops to make sense, explain or think twice - but just speaks in the moment. This speech is seen as action.
It is only one philosophy in the vast controversy of poetic styles.