Reducer rays are constantly bombarding the earth in large qualities, without any serious effect. But when concentrated in this machine, it becomes the most deadly weapon the world has ever seen.
10 seconds sound clip from Superman (1948) - The Reducer Ray (Chapter 3).
You can hear this line at 00:07:38.572 in the Blu-ray version of the episode.
Quote context
[...]
- You've heard of Dr. Graham, our distinguished nuclear scientist.
- Superman, I'm very happy to know you.
- I see.
- Will you step over here, Superman?
- That is, if you're free to say.
- Why, I think it's safe to tell you. Dr. Graham, will you explain, please?
- The machine, from then on, makes its own calculations.
[...]
