1 In sound waves, energy is transferred through vibration of air particles or particles of a solid through which the sound travels. 2  In water waves, energy is transferred through the vibration of the water particles. In sound waves, energy is transferred through vibration of air particles or particles of a solid through which the sound travels. 2  In water waves, energy is transferred through the vibration of the water particles.
The 2016 Longmont, Colorado, population is 92,088. There are 3,379 people per square mile (population density).
Longmont is located within Boulder County. Compared with the other cities in the county, Longmont has the highest number of people who both live and work in the city. Astronaut Vance Brand was born in Longmont, and graduated from Longmont High School. Longmont's Vance Brand municipal airport is named after him. The first store to carry the JCPenney name was located in Longmont. An expedition, headed by Major Stephen H. Long, explored the area's St. Vrain River valley in 1820. The word Longmont is a combination of his name and mont from the French word for mountain.