It seemed to have come from the other side of the energy barrier.

It still makes an energy barrier, and that is what we need.

I read the report on your mission to the energy barrier.

And no guards, even on the other side of the energy barrier.

But the device responsible for the energy barrier was something else again.

The addition reaction path has a rather high energy barrier.

This is many times more than what was needed to overcome the energy barrier.

They both slip back through the energy barrier and return to their own neighborhood.

A false wall, an energy barrier set to respond to his pressure.

Temperature, on the other hand, controls the high of the energy barrier.

The above argument can take another form if the door is modeled as a potential energy barrier.

The guard didn't seem to notice that anything was wrong as he stopped in front of the energy barrier.

He shows her a way through the energy barrier to his own captured realm.

Then she stepped through the energy barrier as though it did not exist and ran from there.

The energy barrier worked in both direction; he would have suffered the same fate.

All our instruments read massive energy barriers around that bridge!

There's not even an energy barrier to protect you!

You still didn't deem the situation dangerous enough to turn away from the energy barrier.

The energy barrier is found to be dependent on the nature of the migrating group.

The making and breaking of chemical bonds is associated with an energy barrier.

However, an energy barrier appears to bar his way.

"Moving from one state to another requires crossing an energy barrier.

Remember that we've got to cross the energy barrier.

The higher the energy barrier, the slower the transformation occurs.

The large energy barriers between these structures do not make isomerization possible.