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Now it began to lower at a rate of 3 feet per second.

He didn't even want to figure how fast that was in feet per second.

In May 2012, 25 images were being sent per second.

The system used an M-40 computer which could do 40,000 operations per second.

They could be turned at about 25 degrees per second.

At one a point the company was losing $1,000 per second.

It takes 16 images at a time or 32 per second.

From 0000 to 9999, one after another, more than a thousand per second.

The difference between the positive and negative lines of force is 16,000 miles per second.

While in this state, one ring is lost per second.