A Flash in the Pan (Origin)

What Is the Origin of the Saying "A Flash in the Pan"?

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Someone described as a flash in pan has made a good early impression but subsequently failed to maintain the same standards. The term derives from the time of early flintlock muskets. When a musketeer pulled the trigger, often the flint would ignite the gunpowder in the lock-pan, causing a flash, but this would fail to set off the main charge. The flash in the pan would look impressive, but it would have no effect, i.e., the musket ball would not be fired.

A Competing Theory

When panning for gold, a miner would often see a glint among the sediment he was filtering in the bottom of his pan. The miner would hope this was a piece of gold, but all too often it turned out to be nothing � just a flash in the pan.

Examples of Use:

Many aspiring artists experience a flash in the pan moment with a viral hit, but sustaining success proves challenging.
The team's early victories turned out to be a flash in the pan as they struggled to maintain their performance throughout the season.
His sudden fame was just a flash in the pan; he quickly faded into obscurity as his popularity dwindled.
While the new product generated excitement initially, it turned out to be a flash in the pan with poor sales and lack of consumer interest.