Wigwag (more formally, aerial telegraphy) is an historical form of flag signaling that passes messages by waving a single flag. It differs from flag semaphore in that it uses one flag rather than two, and the symbols for each letter are represented by …

Wigwag is a nickname for a type of railroad grade crossing signal once common in North America, referring to its pendulum -like motion that signaled a train's approach.

The meaning of WIGWAG is to signal by wigwagging.

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Wig-wag, a tool used to stack sheets of rubber compound into boxes or onto pallets.

2024年9月4日 · The wigwag stands as a testament to the ingenuity and innovation of early 20th-century railway engineers. Its distinctive swinging motion, combined with the flashing lamp and rhythmic bell, provided an effective and reliable warning system that greatly improved safety at railroad grade crossings.

2024年9月27日 · The wig-wag [an instrument measuring solar radiation] utilizes the principle that the gaseous phase of a volatile liquid expands as a result of the conversion of radiant energy to sensible heat. It requires only a reading of the count at whatever interval the observer chooses.