After the series, Frank told me that he couldn't believe the intensity of his feelings and how long that glow lasted.

The orange glow of the crater would last for days.

"The glow lasted for, oh, four or five days."

But the glow lasted less than three years.

The glow of sunset lasted far after the sun disappeared.

"The glow should last at least most of the afternoon."

The glow lasted even after they were gone.

The warm glow of freedom lasted only so long.

The glow lasts for about 30 seconds, but the effect can be documented by a long-exposure photograph.

The blue glow lasts for about 30 seconds.