What is the difference between a bomb calorimeter and a coffee cup calorimeter?

A bomb calorimeter is a sealed device used to measure the heat of combustion of a substance under constant volume, typically in a controlled environment, allowing for high-pressure reactions. In contrast, a coffee cup calorimeter is an open system that measures heat changes in reactions occurring at constant pressure, making it suitable for simpler experiments like neutralization or dissolution in aqueous solutions. The bomb calorimeter is designed for high-energy reactions, while the coffee cup calorimeter is more suited for less intense reactions.