What is a picyograph?

Answer 1

A picyograph is a device used to record minute variations in physical quantities, such as pressure or temperature, often in scientific or industrial applications. It typically converts these variations into visual representations, such as graphs or charts, making it easier to analyze data over time. Picyographs can be essential for monitoring conditions in various fields, including meteorology and engineering. The term is less commonly used compared to more familiar instruments like oscilloscopes or data loggers.