However, something went wrong during the experiment, and many people present were killed.

It changes in response to the different things you vary during the experiment.

During the experiment, the students were asked to go on a three minute run around the campus.

I became depressed, especially during the second dark experiment, which followed.

The panel then draw what they think will happen during the experiment.

I also limited my exposure to regular television news during the experiment.

Only later, in early 1916, would such a device be actually attached during experiments.

During the experiment, I let myself eat a salad once every 10 meals.

But at school during the experiment it seems to leave a white precipitate.

This means you do not want to change anything about the illumination source, or the light path, during the experiment.